Therma-Tru Slim-Line Sliding Patio Door Assembly and Installation

Therma-Tru 

Slim-Line 

Sliding Patio Door 

Assembly 

and 

Installation 

Read all instructions before starting. 

Builder or subcontractor, please forward these instructions to the homeowner. The 

applicable standards for these products are governed by the International Residential 

Code. Copies of performance ratings and testing are available on our website 

www.thermatru.com and our product manual. 

®

INDEX 

DOUBLE PATIO DOOR ASSEMBLY & INSTALLATION...................2 

M.E.U. ( Multiple Extender Unit ) ASSEMBLY & INSTALLATION...17 

TRANSOM INSTALLATION................................................................24 

TRIPLE CONTINUOUS PATIO ASSEMBLY & INSTALLATION.....29 

QUAD CONTINUOUS PATIO ASSEMBLY & INSTALLATION.......33 

REPAINTING PROCEDURE................................................................38 

JAMB EXTENSION INFORMATION..................................................38 

INTERIOR CASING ATTACHMENT...................................................39 

TRIPLE SYSTEM INFORMATION.....................................................40 

HANDING GUIDE.................................................................................41 

SIZING INFORMATION.......................................................................42 

SCREW CHART....................................................................................43 

1

® 

The following packages are needed to complete the installation of your Therma-Tru Slim-Line 

Sliding Patio Door System. Check all components for correct size and color. See page 42 for sizing 

information. 

Frame Kit 

1-Head Jamb 

2-Side Jambs 

1-Sill 

1-Active Weatherstrip Carrier 

1-Inactive Weatherstrip Carrier 

2-Active Panel Hole Plugs 

1-Panel Bumper 

12-#10 x 3" Flat Head Screws 

Operating 

Stationary 

12-#8 x 3" Pan Head Screws 

1- This Instruction Booklet 

2- Panel Anchor Blocks 

2- #10 x 1 ½" Phillips Anchor Screws 


1-Sill Cap Base 

1-Sill Cap Top 

1-Drip Cap 

1-Head Sealing Fin 

Panel 

Panel 

2-Corner Pads 

Screen 

Additional Parts 

1-Foot Bolt 

1-Foot Bolt Keeper 

1-#8 x 1 ½" S.S. Pan Head Screw 

3-#8 

x 9/16" S.S. Pan Head Screws 

2-#8 x 1" S.S. Pan Head Screws 

1-Touch Up Paint 

Handle Set Kit 

2-Handles 

1-Mortise Lock 

1-Keeper 

1-Spacer 

1-Escutcheon with Lock 

1-Escutcheon 

2-Phillips Screws with Colored Heads 

4-Hex Drive Screws 

2-Keys 

1-Gasket 

1-Hex Wrench 

1-Through Pin 


4-#8 x 1" Pan Head Sheet Metal Screws 

Operating Panel 

Stationary Panel 

Optional Components 

Transom 

Coastal Package 

Tools and materials needed for assembly and installation: 

• 100% Silicone Sealant and Caulk Gun 

6' Level 

Measuring Tape 

Electric Drill 

#2 Phillips Drive Bit 

Staple Gun or Brad Nails 

1/8“ Drill Bit 

Flat-blade Screwdriver 

Gloves 

Safety Glasses 

Partial Roll of Insulation 

Shims 

2

1 

2 

NOTE: 

A large work area is needed to assemble the frame kit. Cover area with cardboard 

from one or more door panel cartons to protect frame parts and floor. 

LAY FRAME COMPONENTS ONTO WORK AREA. 

Lay parts on floor and position sill, head and side 

jambs with exterior side up. 

ATTACH SILL TO JAMBS 

Apply sealant to sill as shown. 

Sill 

Exterior 

Side Jamb 

Sill 

NOTE: Be sure that foam pads are in place before assembling frame. 

Foam Pads 

Sealant 

Frame Assembly 

Side Jamb 

Head Jamb 

Side Jamb 

Fasten side jambs to sill through pre-drilled holes 

using (3) #10 x 3“ flat head screws. (Starting with 

center screw is recommended.) 

Repeat for opposite side. 

#10 x 3“ Flat Head Screw 

3 

Sealant

3 ATTACH HEAD TO JAMBS 

4 DRIP CAP INSTALLATION 

Head Sealing Fin 

Exterior 

4 

Head Jamb Side Jamb 

Fasten side jambs to head jamb through pre-drilled 

holes using (3) #10 x 3“ flat head screws. (Starting 

with center screw is recommended.) 


#10 x 3“ Flat Head Screw 

Place the aluminum cap flashing on top of the head jamb. 

Place the head sealing fin on top of the aluminum cap 

flashing. Staple the head sealing fin to each of the anchor 

blocks in the head jamb u sing a ½" stapler . 

NOTE: 

If transom is to be mulled to a system, skip step 

4 and 5. 

Exterior 

Aluminum Cap Flashing 

Exterior

Frame Installation 

Check rough opening as follows and correct if necessary: 

Sub-floor to be flat, level, and clean. Sill must be supported throughout its 

entire length. 

All four corners to be square. Check with a framing square. 

Framing and walls to be plumb. Use a 6-foot level to check both sides of 

opening. 

All wall surfaces to be straight and sides parallel. 

Opening to be correct size. Allow 3/8“ on sides and ½" at head. 

Wall 

straight? 

Check each 

side both 

ways. 

Check all four 

corners with 

square. 

Check floor 

under sill. 

5 

Wall 

straight?

5 

4 APPLY SILICONE SEALANT TO BOTTOM OF SILL 

6 

APPLY CORNER PADS TO SEALING FIN 

Apply the corner pads to the sealing 

fins in the two top corners. 

Run beads of silicone sealant 

across entire length of sill 

bottom to provide a weathertight 

seal. 

Sealant 

Exterior 

NOTE: 

A CONTINUOUS BEAD OF SEALANT IS REQUIRED. 

6 

Corner Pad

7 

8 

SET SYSTEM INTO ROUGH OPENING 

Generously apply sealant to the backside 

of the sealing fin. From outside of house, 

set system into rough opening. Apply 

pressure on sill to set sealant. 

LEVEL SILL 

Sill MUST be flat and level. Check and make any 

necessary adjustments. 

If necessary, add temporary blocking under 

projecting exterior edge of sill to serve as 

support during construction. 

Exterior 

Sealant 

7

9 

10 

PLUMB SIDE JAMBS 

Jambs must be plumb and straight. 

Shim as necessary to remove any bow. 

Fasten system to rough opening using staples, 

nails, or screws through sealing fin at the corners. 

Fasten through every third opening in the sealing 

fin. If needed the jambs can be back filled with insulation. 

INSTALL SILL CAP BASE 

8 

Shims 

Install the vinyl sill cap base by starting at each jamb and working towards 

the center of the door. Use a rubber mallet to snap into place. 

Exterior 

Interior 

Vinyl Sill Cap Base

11 SECURE FRAME IN ROUGH OPENING 

Using (12) #10 x 3“ pan head screws, fasten frame to rough 

opening through pre-drilled holes in frame. The sill does 

not have pre-drilled holes. 

12 

INSTALL STATIONARY PANEL 

A. Apply a 1/4” bead of caulk (recommend clear sealant) to 

bottom of sill inactive door riser. 

B. From exterior side of system, install stationary panel by inserting 

top of panel into exterior channel. Rotate bottom panel in 

until sill inactive door riser leg sets into groove. As reference the 

interior side of the slab is always the side with the glazing bead. 

C. Slide slab tightly against side jamb 

D. Wipe off excess caulking. 

Exterior 

Riser 

A 

#10 x 3“ Pan Head Screws 

The sill's center screw needs 

to be installed three inches 

off center in the direction of 

the active panel. 

9 

#10 x 3“ Pan Head Screws 

The screws used on the sill are installed through the 

sill cap into the sill substrate. There is a v-groove 

in the sill cap to assist in aligning the screw. 

Exterior 

Glazing Bead 

Sill 

Interlock 

Exterior 

Sill Cap

13 

15 

INSTALL ANCHOR TO THE INACTIVE PANEL & SILL 

Remove the bottom screw on the inactive panel 

and discard. Insert the panel anchor as shown. 

Using 

a 1/8" drill bit drill into the toe-screw opening 

through the fiberglass and substrate. Install the 

#10 x 2 ½" phillips pan head screw (1) into the panel 

anchor through the toe-screw hole. Attach 

the anchor to 

the panel with the #10 x 1 ½" phillips pan head screw 

(2) that is supplied. 

14 

INSTALL ANCHOR TO THE INACTIVE PANEL & HEAD 

Remove the top screw in the inactive 

panel and discard the screw. Then insert 

the panel anchor as shown. Using a 1/8" 

drill bit, drill into the toe-screw opening 

through the fiberglass and substrate. 

Install the #10 x 2 ½" phillips pan head 

screw (1) into the panel anchor through 

the toe-screw hole.Then attach the anchor 

to the panel with the #10 x 1 ½" phillips 

pan head screw (2) that is supplied. 

CUTTING WEATHERSTRIP CARRIERS 

A. Locate the two weatherstrip carriers in the frame box, one for the active panel and one for the 

fixed panel. 

B. The carriers have been sent along for cutting in the field based on the handing of the door. 

C. Follow the instructions below for the door handing you are installing. 

Cut off this end in field for left hand (LF) door 

Active Panel 

Cut off this end in field for right hand (FR) door 

10 

2 

Cut off this end in field 

for left hand (LF) door 

Fixed Panel 

Cut off this end in field for right hand (FR) door 

2 

1 

1 

Panel Anchor 

Panel Anchor

16 ATTACH INACTIVE WEATHERSTRIP CARRIER 

Install weatherstrip carrier, use a block of wood or 

rubber mallet to avoid damage to the parts. Line up 

the fixed slab weatherstrip carrier flush to the bottom 

of the head jamb. Insert barbs into stile grooves, tap into 

place, then do the same at the sill. Work your way 

towards the center of the panel. Make sure that both 

carriers fit properly into the slots on the edge of 

each slab. 

17 

18 

INSTALL ACTIVE PANEL 

From interior side of system, install active 

panel up into interior channel in head 

jamb. Push upwards as far as possible 

and rotate into place until rollers engage 

onto sill roller track. 

11 

Interior 

NOTE: BE SURE TO HAVE THE ACTIVE PANEL NEAR 

THE CLOSED POSITION BEFORE INSTALLING TO 

ENSURE THAT THE INTERLOCKS WILL MEET WHEN 

THE DOOR IS CLOSED. BE SURE THAT THE PANEL IS 

SQUARE TO THE FRAME. 

ADJUST ROLLERS 

Using a screw driver, turn 

adjustment screws in rollers 

left or right until panel is 

level and glides smoothly 

across the track. 

Close panel to within 1/4“ 

of lock jamb. Use visual 

margin to assure panel is 

adjusted straight with 

frame. 

Inactive 

Weatherstrip 

Carrier 

Active Panel Installation 

Interior 

Exterior

19 

20 

ATTACH ACTIVE WEATHERSTRIP CARRIER 

Align active weatherstrip carrier with bottom edge of active 

panel. Starting at bottom, insert barbs into stile grooves. 

Working your way up, tap in place with a hammer and 

wood block or rubber mallet. Carefully inspect interior 

edge of interlock. Tap as necessary to obtain a tight fit 

along door edge. 

21 

INSERT PANEL BUMPER 

Insert panel bumper into innermost channel 

in head jamb, butting end of bumper against 

stationary side jamb. Seat panel bumper flush 

with head jamb. 

Side Jamb 

Handle Installation 

12 

Interior 

Side 

Head Jamb 

Panel 

Bumper 

NOTE: IF NEEDED THE BUMPER CAN BE CUT DOWN FROM ITS 

ORIGINAL LENGTH OF SIX INCHES TO FOUR AND A HALF INCHES. 

THIS WILL ALLOW FOR A WIDER ENTRANCE. 

INSTALL MORTISE LOCK 

Install mortise lock and spacer 

through pre-fabricated holes in 

active door edge. 

Spacer 

(2) 1" Phillips Flathead 

Machine Screws 

Interior 

Exterior

22 ALIGN EXTERIOR HANDLE 

A. Assemble handle to escutcheon plate, according to the hand of the door, with two hex screws. 

The curve of the handle should slope toward the center of the door slab that it is being installed 

on. Tighten securely to prevent loosening during operation. 

B. The black foam gasket should be installed under the exterior escutcheon plate. This piece will 

prevent water infiltration. 

C. Insert through pin into escutcheon plate. 

D. The tailpiece will require positioning prior to assembly on the door. Rotate the tailpiece until it 

reaches a horizontal position. 

E. Place exterior handle on door aligning holes in panel. 

Exterior 

Gasket 

Tailpiece 

Escutcheon 

Key Cylinder 

23 

ALIGN INTERIOR HANDLE 

Handle 

13 

Through Pin 

A. Assemble handle to escutcheon plate, according to the hand of the door, with two hex screws. 

The curve of the handle should slope toward the center of the door. Tighten securely to prevent 

loosening during operation. 

B. If desired, the thumb knob can be changed to different positions when in the locked and unlocked 

positions. To do this, remove the screw in the stem of the thumb turn. Next, rotate the adaptor so 

the desired threaded hole in the adaptor lines up with a hole in the thumb turn stem. 

C. Turn the thumb knob to align it with the tailpiece. 

Place 

interior handle over latch, aligning holes in panel. 

Thumb Knob 

D. Fasten handles together with (2) phillips pan head colored screws, 

do not tighten the mounting screws completely. 

E. Completely close the active door, rotate the key to the locked and 

unlocked positions. In each case the key should be removable. 

This indicates that the key is installed properly. If it does not 

operate properly rotate the tailpiece in the opposite direction 

and reinstall. Tighten the mounting screws to complete the 

installation. 

(2) 2" Phillips Pan Head Colored Screws 

NOTE: 

USE CAUTION NOT TO OVERTIGHTEN SCREWS.

24 

25 

INSTALL KEEPER 

Align keeper to pre-drilled holes 

in active jamb and fasten with 

(4) 1 ½" phillips pan head screws. 

Close door and adjust keeper for 

proper latch engagement. Latch 

throw can be adjusted by the 

slotted adjustment screw on the 

face of mortise lock. 

(4) 1 ½" Phillips Pan 

Head Screws 

INSTALL FOOT BOLT 

Align foot bolt to pre-drilled holes 

in active slab and fasten with the screws shown below. 

(3) #8 x 9/16" S.S. Pan Head Sheet Metal Screws 

(1) #8 x 1 ½" S.S. Pan Head Sheet Metal Screws 

14 

Foot Bolt

26 

27 

INSTALL SILL CAP TOP 

Place a continuous bead of clear sealant at the 

locations shown across the base profile. Install 

the sill cap top by starting at each jamb 

and working towards the center of the door. Use 

a rubber mallet to snap into place. Seal the ends 

of both profiles to the side frame as shown. 

Clean up any excess sealant. 

Exterior 

INSTALL FOOT BOLT KEEPER 

Close the active door completely, align keeper with foot 

bolt. Slide the keeper as far as it will go towards the exterior 

of the unit. Only the two exposed holes will be used for 

installation. Use a 1/8" drill bit to drill two holes through the 

holes in the keeper into the sill cap and through the fiberglass 

of the sill. Fill the holes with a small amount of clear sealant. 

Screw the two #8 x 1" S.S. pan head sheet metal 

screws into the holes. Clean up any excess sealant. 

#8 x 1" S.S. Pan Head Sheet Metal Screw 

15 

Exterior 

End of Riser 

Sealed to Frame 

Continuous 

Sealant 

Sill Cap Top 

Exposed holes

28 

29 

SLIDING SCREEN DOOR 

Refer to the instruction label on the screen. 

INSERT PLUGS X 

Two plugs are supplied, insert the plugs 

into roller adjustment holes. 

Final Assembly 

Hole plug 

Weatherproof, Finish and Maintain System 

Caulk around entire system on exterior side. Seal sealing fins to siding or facing, 

seal front bottom edge of sill, seal all joints between jambs and moldings. 

Seal joints between exterior hardware trim and door face to prevent air and 

water infiltration. 

Remove sill tape and the labels on the glass. 

Use the touch up paint to paint the heads of the rough opening screws. 

16 

Exterior

Frame Kit 

1-Head Jamb 

2-Side Jambs 

1-Sill 

2 -Mullion Strips 

12 -#10 x 3" Flat Head Screws 

12 -#8 x 3" Pan Head Screws 

6 -#8 x 2" Pan Head Screws 



1-Drip Cap 


2-Corner Pads 

1-Splice 

2-Panel Anchors 

2 -#10 x 1 ½" Pan Head Screws 

1-This Instruction Booklet 

1 -Touch Up Paint 

Stationary Panel 

M.E.U. Assembly 

® 


Sliding Patio Door Multiple Extension System. Check all components for correct size and color. 

See page 42 for sizing information. 


100% Silicone Sealant and Caulk Gun 

6' Level 







2x4WoodBlocks 

Gloves 



Shims 

17

1A 

2A 

Assembly 

NOTE: 

A large work area is needed to assemble the frame kit. Cover area with cardboard 

from one or more door panel cartons to protect frame parts and floor. 

LAY PANEL ON 2X4BLOCKS 

Position 2x4blocks on edge. 

Lay panel on top of blocks with 

exterior side up. As reference the 

interior of the slab is always the 

side with the glazing bead. 

Exterior 

Glazing Bead 

2 x 4 Block 

INSTALL PANEL ANCHORS 

#10 x 1 ½" Pan Head Screw 

Top Screw 

Panel Side 

18 

CAUTION: 

Skin of panel to be laying on 2x4blocks, 

not glass. Blocks not to extend beyond panel edges. 

Panel Top 

Remove the top screw in the slab side and 

discard the screw. Insert panel anchor as 

shown and attach with #10 x 1 ½" 

phillips pan head screw that is supplied. 

Repeat on opposite panel side.

3A LAY FRAME COMPONENTS AROUND PANEL 

Place frame components, with 

exterior side up, around panel. 

4A 

PLACE SIDE JAMB 

Position both side jambs up against panel edges. 

Exterior 

Top 

Sill 

Bottom 

Side Jamb 

Exterior 

19 

Temper Blaze 

Head Jamb 

Side Jamb

5A 

APPLY SEALANT TO SILL 

Apply a continuous bead of sealant on riser and both ends of sill. 

Exterior 

Sealant 

6A PLACE SILL 

Position sill riser under door panel. 

18 7A ATTACH SILL TO JAMB 

Fasten side jambs to sill through pre-drilled holes 

using (3) #10 x 3“ flat head screws. (Starting with 

center screw is recommended.) 


Sill 

20 

Exterior 

Exterior 

Sealant 

Side Jamb 

Riser 

Panel 

#10 x 3“ Flat 

Head Screws

8A ATTACH HEAD JAMB 

Slide head jamb onto edge of panel. 

Align with side jambs. 

Fasten side jambs to head jamb through 

pre-drilled holes using (3) #10 x 3“ flat 

head screws. (Starting with center screw 

is recommended.) 


9A MULLED OR FRAMED INDEPENDENT 

If framing system independently go to page 4 steps 4 - 10, then secure in 

rough opening as shown below. Install sill cap top per installations in 

step 26, page 15. 

If mulling to another system remove the sealing 

fin from the mating edge. Proceed to step 10A. 

Exterior 

Sill 

#10 x 3“ Pan Head Screw 

Sill Cap 

21 

Exterior 

#10x3“ 

pan head 

screws 

#10x3“ 

Flat Head 

Screws

10A 

11A 

ATTACH M.E.U. TO TWO PANEL SYSTEM 

Run a bead of sealant on the mullion covers and then staple the 

covers to the transom. Staple into the substrate and not the 

fiberglass. A 3/4" staple is recommended. Staple the two 

mullion covers to the M.E.U. Align M.E.U. With two-panel 

system. Using (6) #8 x 2“ pan head screws, fasten M.E.U. and 

two-panel systems together through pre-drilled holes in frames. 

If the drip cap is being used on this installation use the 

aluminum splice to cover the gap between the drip cap of 

the M.E.U., and the drip cap of the two-panel system. 

(3) #10 x 2“ 

pan head screws 

INSTALL SYSTEM 

Turn to page four and follow steps 4 -29. Note that 

some of the details in step4-29 aretailored to the double 

patio systems and some details may vary slightly. The attachment 

points for the mulled triple are shown below. 

#10 x 3“ pan head screws 

Aluminum Splice 

(3) #8 x 2“ 


Mullion Cover 

22 

Mullion Cover 

Sealant 

#10 x 3“ Pan Head Screw 

The sill's center screw needs to be installed three inches 

off center in the direction of the active panel.

24Weatherproof, 

Finish and Maintain System 

Caulk around entire system on exterior side. Seal sealing fins to siding or facing, seal front 

bottom edge of sill, seal all joints between jambs and moldings. 

Seal joints between exterior hardware trim and door face to prevent air and water infiltration. 

® 

Paint or stain according to Therma-Tru instructions. Do NOT paint gaskets or weatherstrip. 

Maintain or replace sealants and finishes as soon as any deterioration is evident. For semigloss, 

glossy paints, or clear coats, do this when surface becomes dull or rough. More severe 

exposures require more frequent maintenance. 


23

Transom 

Transom 

® 


Sliding Patio Door Transom. Check all components for correct size and color. See page 42 for 

sizing information. 



1' Level 







Gloves 



Shims 

Saw 

24

1B 

2B 

MULLED OR FRAMED INDEPENDENT 

If mulling to a system remove the sealing fin from the mating 

edge. Complete step 4 on page 4. Proceed to step 2B. 

If framing independent proceed to step 6B. If you are framing two 

transoms together independently proceed to step 3B followed by step 6B. 

APPLY CORNER PADS TO SEALING FIN 

Corner Pad 

Apply the corner pads to the sealing 

fins in the two top corners. 

3B APPLY MULLION COVER FOR DOUBLE TRANSOMS 

FRAMED INDEPENDENT 

- Run a bead of sealant on backside of mullion covers. 

- Staple covers to transom through anchor blocks not fiberglass frame using 3/4" staples. 

MULLED ON PATIO DOOR 

- Trim ½" off one end of mullion cover. 

- Run a bead of sealant on back 

side of mullion cover. 

- Staple cover to transom through 

anchor blocks, not fiberglass. 

Sealant 

Center Mull Strip 

Transom 

25 

Center Mull Strip 

Transom 

Patio System Head Jamb

4B 

ATTACH TRANSOM TO PATIO UNIT 

A. Run a bead of sealant on the mullion covers and then staple the 

covers to the transom. Staple into the substrate and not the fiberglass. 

A 3/4" staple is recommended. 

B. Align transom to patio door system. Using (6) #8 x 2“ pan head screws, 

fasten transom and patio door system together through pre-drilled holes in frames. 

Number of screws will vary based on the system width. 

(6) #8 x 2“ 


5B MODIFYING CORNER PADS FOR MULLED TRANSOMS 

To maintain a consistent seal around the system the corner pads 

need to be applied. Cut pad as shown and apply to sealing fin 

joint. 

Cut Line 

Mullion Cover 

26 

Exterior 

Sealant 

Mullion Cover

5B INSTALL SYSTEM 

Turn to page 5 and follow steps 6 -10. Secure frame in rough opening using the #10 x 3" pan 

head screws. Fasten frame to rough opening through pre-drilled holes in the frame. Follow the 

screw spacing shown below for the sill screw location. Fasten sill to floor. Turn to page 9 and 

follow steps 12 - 29. Note that some of the details are tailored to the double patio systems and 

some details may vary slightly. 

MEU DOUBLE 

TRIPLE MULLED 





27 

TRIPLE CONTINUOUS 





QUAD CONTINUOUS The screws used on the sill are installed through the 

If this is the active door side this 

screw needs to be installed three 

inches off center in the direction of 


sill cap into the sill substrate. There is a v-groove 

in the sill cap to assist in aligning the screw. 

Exterior 

Sill 

Sill Cap

6B INDEPENDENT INSTALLATION 

Turn to page 5 and follow steps4-9.Secure frame in rough opening 

using the #10 x 3" pan head screws. Fasten frame to rough opening 

through pre-drilled holes in the frame. 

Exterior 

28

Continuous Triple Assembly 

® 


Sliding Patio Door Continuous Triple Assembly. Check all components for correct size and color. 


Screen 

Frame Kit 

1-Head Jamb 

2-Side Jambs 

1-Sill 

1-Active Weatherstrip Carrier 

1-Inactive Weatherstrip Carrier 


1-Panel Bumper 









1-Drip Cap 


2-Corner Pads 

1-Astragal 



1-Spacer 


1-Keeper 


1-Escutcheon 



2-Keys 

1-Gasket 

1-Hex Wrench 

1-Through Pin 



Operating 

Panel 

1 - Operating Panel 

2 - Stationary Panel 


Transom 


29 

Stationary 

Panel 



6' Level 







Gloves 



Shims 

Stationary 

Panel 


1-Foot Bolt 

1-Foot Bolt Keeper 

1-#8 x 1 ½" S.S. Pan Head Screw 

3-#8 x 9/16" S.S. Pan Head Screws 


1-Touch Up Paint

1C FRAME ASSEMBLY 

Proceed to page 3 and follow steps1-11.Note that 

some of the details in step1-11aretailored to the double 

patio systems and some details may vary slightly. Secure the 

frame in the rough opening at the attachment points shown. 

2C INSTALL THE FIRST STATIONARY PANEL 

A. Apply a 1/4” bead of caulk (recommend clear sealant) to bottom 

of sill inactive door riser. Where inactive panel is to be installed. 

B. Locate the non-handed stationary slab, this slab has no interlocks 

as shown below. From exterior side of system, install stationary 

panel by inserting top of panel into exterior channel. Rotate 

bottom panel in until sill inactive door riser leg sets in groove. 



E. Proceed to page 10 and follow steps 13 and 14. 

A 

Exterior 

3C 

Exterior 

INSTALL ASTRAGAL 

Install astragal, using a block of wood or rubber mallet 

to avoid damage to the parts. Line up astragal to the 

bottom of the slab. Insert barbs into stile grooves. Tap into 

place, repeat at head. Work your way towards the center of 

the panel. Check fit of astragal along entire length of panel. 

30 

Exterior 

Glazing Bead

4C INSTALL SECOND PANEL 





until sill inactive door riser leg sets into groove. The interlock 

should be towards the active door. 

Exterior 

C. Slide slab tightly into the astragal. 


Exterior 

Riser 

A 

5C PANEL INSTALLATION CONTINUED 

Follow steps 13 - 19 to complete panel installation. 

6C HANDLE AND MORTISE LOCK INSTALLATION 

Follow steps 21 - 29 to complete the handle and mortise lock installation. 

C 

31 

Interlock 

B

7C 

INSERT PANEL BUMPER 


in head jamb. Bumper location should allow 

for the maximum door opening but stop the 

door panel before the handle could pinch a 

persons fingers. Three inches is recommended 

as the minimum clearance. 

Weatherproof, Finish, and Maintain System 







32 

Panel 

Bumper 

Interior 

Side 

Head Jamb 

3" 

Panel 

Bumper

Continuous Quad Assembly 

® 


Sliding Patio Door Continuous Quad Assembly. 


Frame Kit 

1-Head Jamb 

2-Side Jambs 

1-Sill 

Check all components for correct size and color. 

2-Active Weatherstrip Carriers 

2-Inactive Weatherstrip Carriers 


2-Panel Bumpers 






Stationary 

Panel 

Operating 

Panel 

Operating 

Panel 

Stationary 

Panel 




1-Drip Cap 


2-Corner Pads 

1-Astragal 

1-Keeper 

1-Strike Spacer 

1-Strike Backer 

2 - Screens 

2 - Operating Panels 

2 - Stationary Panels 


Transom 



2-Foot Bolts 

2-Foot Bolt Keepers 

2-#8 x 1 ½" S.S. Pan Head Screws 

6-#8 x 9/16" S.S. Pan Head Screws 


1-Touch Up Paint 

1-Screen Astragal 

4-#6 x 3/4" TEK Screws 

4-#10-32 x 1 1/4" PPH SS MS 




1-Spacer 

1-Keeper 


3-Escutcheons 



2-Keys 

2-Gaskets 

2-Hex Wrenches 

2-Through Pins 





6' Level 






332 / “ Drill Bit 


Gloves 



Shims 

33

1D FRAME ASSEMBLY STEPS 1 -11 

Proceed to page 3 and follow steps1-11.Note that 

some of the details in step1-11aretailored to the double 

patio systems and some details may very slightly. Secure the 

frame in the rough opening at the attachment 

points shown below. 

2D INSTALL THE FIRST STATIONARY PANEL 





until sill inactive door riser leg sets into groove. As reference 

the interior of the slab is always the side with the glazing bead. 

The interlock should be towards the center of the door. 

Exterior 



E. Repeat for opposite side. 

3D 

Riser 

Exterior 

If this is the active door side this 

screw needs to be installed three 

inches off center in the direction of 


A 

Exterior 

PANEL INSTALLATION CONTINUED 

Follow steps 13 - 19 to complete the panel installation. 

Most of these steps will need to be completed twice. 

34 

Glazing Bead 

B 

Interlock

4D 

5D INSERT PANEL BUMPER 


in head jamb, butting end of bumper against 

stationary side jamb. Seat panel bumper flush 

with head jamb. 

6D 

INSTALL ASTRAGAL & KEEPER 

Assemble the parts shown below to the astragal with 4 #10 - 32 x 1 1/4" PPH SS MS. Install the top 

and bottom of the astragal and work towards the center. Note the notched portion goes at the bottom 

of the slab. Take caution to align the astragal with the bottom of the panel. 

#10-32 x 1 1/4" PPH SS MS 

Keeper 

35 

Panel 

Bumper 

Nylon Strike Spacer 

Astragal 

Interior 

Side 

Side Jamb 

SS Strike Backer 

Head Jamb 

Panel 

Bumper 

NOTE: IF NEEDED THE BUMPER CAN BE CUT DOWN FROM ITS 

ORIGINAL LENGTH OF SIX INCHES TO FOUR AND A HALF INCHES. 

THIS WILL ALLOW FOR A WIDER ENTRANCE. 

HANDLE AND MORTISE LOCK INSTALLATION 

Follow steps 21 - 23 then 25 - 27 to complete the handle and mortise lock installation.

7D PASSIVE HANDLE INSTALL 

A. Assemble handle to escutcheon plate according to the hand of the door, with two hex screws. 

The curve of the handle should slope toward the center of the slab it is being installed into. 

Tighten securely to prevent loosening during operation. 

B. The black foam gasket should be installed under the exterior escutcheon plate. This piece will 

prevent water infiltration. 

C. Insert through pin into escutcheon plate. 

D. Place exterior handle on door aligning holes in panel. 

8D 

Escutcheon 

ALIGN INTERIOR HANDLE 

Handle 

36 

Exterior 

A. Assemble handle to escutcheon plate according to the hand of the door, with two hex screws. 

The curve of the handle should slope toward the center of the door. Tighten securely to prevent 

loosening during operation. 

B. If desired, the thumb knob can be changed to different positions when in the locked and unlocked 

positions. To do this, remove the screw in the stem of the thumb turn. Next, rotate the adaptor so 

the desired threaded hole in the adaptor lines up with a hole in the thumb turn stem. 

C. Place interior handle over latch aligning holes in panel. 

D. Fasten handles together with (2) phillips pan head colored screws. 

Tighten the mounting screws to complete the installation. 

NOTE: 

USE CAUTION NOT TO OVER 

TIGHTEN SCREWS. 

Gasket 

(2) 2" Phillips Pan Head Colored Screws

9D INSTALL SCREEN ASTRAGAL 

Insert the screen astragal on the passive 

screen. Using a 3/32" drill bit drill a hole 

through the astragal six inches down from 

the top and another one six inches from the 

bottom. Then screw two of #6 x 3/4" TEK 

screws into the screen threw the holes in 

the astragal. 

10D SCREEN INSTALLATION 

Follow steps 28 - 29 to complete the installation. Do not use the screws that are suppled 

with the screen. Use two #6 x 3/4" TEK screws instead. 

Weatherproof, Finish, and Maintain System 







37 

Screen 

Astragal

A 

B 

JAMB EXTENSION INFORMATION 

The following images are intended to 

help clarify how a Slim-Line patio door 

is installed in different frame openings. 

The jamb extensions are made of standard 

wood trim materials, readily available from 

lumber yards and building material retail 

stores. Attach the jamb extensions through 

the side into the wall. 

Additional Information 

REPAINTING PROCEDURE 

38 

1 1/8" 

4 9/16" 

2 x 4 CONSTRUCTION 

2 " 

3/4" 

1 1/8" 

6 9/16" 

2 x 6 CONSTRUCTION 

1. Sand the surface to be recoated with 180 grit sandpaper to abrade and make porous. 

2. Remove all sanding dust from the surface. This can be accomplished by using a damp cloth. 

3. Optional: Wipe the surface with a solvent paint degosser applied with a clean cloth followed 

by a final wipe with an additional clean cloth to ensure the surface is free of any contaminates. 

TM 

4. Apply Sherwin Williams DTM Bonding Primer part # B66A50 to the surface and let the 

coating dry, following the directions provided on the label located on the back of the can. 

TM 

5. Topcoat the Sherwin Williams DTM Bonding Primer with a high quality acrylic latex 

coating such as Sherwin Williams SuperPaint A84 Series or Sherwin Williams DTM 

Acrylic Coating B66 Series. 

For store locations of the above mentioned paints call 1-800-4SHERWIN 

TM 

Corresponding Sherwin Williams SuperPaint Codes: 

BRONZE WHITE STONE ALMOND 

A89T54 A89W507 A89W53 A89W51 

N1 10/32 R2 1/128 B1 9/32 B1 4/32 +1/64 

R2 13/32 B1 1/64 W1 10/32 Y3 19/32 

W1 39/32 N1 1/64 N1 2Y +46/32 N1 2Y +18/32 

B1 6Y +62/32 

Exterior Exterior 

TM TM

C INTERIOR CASING ATTACHMENT 

Interior casing may be attached to the Slim-Line frame in either of the following ways. 

An air nailer can be used to fasten the interior casing to the Slim-Line frame using 0.050” x 

1-½" wire brad nails through the casing and fiberglass frame. For maximum holding power, 

ensure that nails are installed through anchor blocks located within frame profiles. Locations 

are shown below for standard two-panel systems. 

For manual application, we suggest using 4d-1-½" finish nails. They can be used to secure interior 

casing to the frame. Pre-drilled pilot holes (1/16" dia.) are recommended to avoid splitting casing or 

frame. Ensure that nails are installed through anchor blocks for maximum holding power. 

5" 

5" 

1" 

5" 

6 1/4" 

System 

Center 

Line 

5" 

Lock 

Center 

Line 

39 

6 1/4" 

5" 

5" 

5"

D TRIPLE SYSTEM INFORMATION 

The intention of this section is to clarify the differences between a triple mulled and 

triple continuous Slim-Line Patio Door System. 

Handing Configurations for a Mulled Triple: 

FLF (Fixed, Left Hand Active, Fixed) 

FRF (Fixed, Right Hand Active, Fixed) 

LFF* (Left Hand Active, Fixed, Fixed) 

FFR* (Fixed, Fixed, Right Hand Active) 

Handing Configurations for a Continuous Triple: 

LFF (Left Hand Active, Fixed, Fixed) 

FFR (Fixed, Fixed, Right Hand Active) 

* When ordering a LFF or FFR patio door the continuous configuration will be used as the 

automatic default. If a LFF or FFR is needed in a mulled configuration it can be ordered as 

a double and a multiple extension system and then joined in the field. 

Please note that the overall width of a mulled system is different then that of a continuous system. 

Another significant difference between a mulled triple and a continuous triple is the packaging. 

A triple continuous system will be shipped in two uni-boxes and a long frame box. 

In comparison, a mulled system will ship in just two boxes. 

TRIPLE CONTINUOUS PATIO DOOR 

LFF SHOWN 

40 

TRIPLE MULLED PATIO DOOR 

FRF SHOWN

All quad systems are left handed. 

NOTE: DOORS ARE HANDED AS VIEWED FROM THE EXTERIOR. 

E DOOR HANDING GUIDE 

LEFT HAND DOOR (LF) 

LEFT HAND DOOR (LFF) 

41 

RIGHT HAND DOOR (FR)

R.H. = Replacement Height 

SL = Side Lite 

X = Active Door 

O = Inactive Door 

T = Triple 

Q = Quad 

SIZING INFORMATION 

THERMA-TRU PATIO DOOR SIZING SPECIFICATIONS 

DESCRIPTION CONFIGURATION SYSTEM DIM. ROUGH OPENING GRIDS 

WIDTH HEIGHT WIDTH HEIGHT # OF LITES 

2/6 X R.H. FIXED SL 32 9/16 79 1/2 33 5/16 80 10 or 15 

3/0 X R.H. FIXED SL 38 9/16 79 1/2 39 5/16 80 10 or 15 

4/0 X R.H. FIXED SL 50 9/16 79 1/2 51 5/16 80 20 

2/6 X 8/0 R.H. FIXED SL 32 9/16 95 1/2 33 5/16 96 12 or 18 

3/0 X 8/0 R.H. FIXED SL 38 9/16 95 1/2 39 5/16 96 12 or 18 

4/0 X 8/0 R.H. FIXED SL 50 9/16 95 1/2 51 5/16 96 24 

5/0 X R.H. XO or OX 59 1/4 79 1/2 60 80 10 or 15 

6/0 X R.H. XO or OX 71 1/4 79 1/2 72 80 10 or 15 

8/0 X R.H. XO or OX 95 1/4 79 1/2 96 80 20 

9/0 X R.H. XOO or OOX 106 13/16 79 1/2 107 9/16 80 10 or 15 

9/0 X R.H. OXO 109 7/8 79 1/2 110 5/8 80 10 or 15 

10/0Q X R.H. OXXO 115 3/4 79 1/2 116 1/2 80 10 or 15 

12/0T X R.H. XOO or OOX 142 13/16 79 1/2 143 9/16 80 20 

12/0T X R.H. OXO 145 7/8 79 1/2 146 5/8 80 20 

12/0Q X R.H. OXXO 139 3/4 79 1/2 140 1/2 80 10 or 15 

5/0 X 8/0 R.H. XO or OX 59 1/4 95 1/2 60 96 12 or 18 

6/0 X 8/0 R.H. XO or OX 71 1/4 95 1/2 72 96 12 or 18 

8/0 X 8/0 R.H. XO or OX 95 1/4 95 1/2 96 96 24 

9/0 X 8/0 R.H. XOO or OOX 106 13/16 95 1/2 107 9/16 96 12 or 18 

9/0 X 8/0 R.H. OXO 109 7/8 95 1/2 110 5/8 96 12 or 18 

10/0Q X 8/0 R.H. OXXO 115 3/4 95 1/2 116 1/2 96 12 or 18 

12/0T X 8/0 R.H. XOO or OOX 142 13/16 95 1/2 143 9/16 96 24 

12/0T X 8/0 R.H. OXO 145 7/8 95 1/2 146 5/8 96 24 

12/0Q X 8/0 R.H. OXXO 139 3/4 95 1/2 140 1/2 96 12 or 18 

PATIO TRANSOM SIZING SPECIFICATIONS 

DESCRIPTION CONFIGURATION REF SYSTEM WIDTH # PER. CONFIG. SYSTEM DIM. ROUGH OPENING DAYLIGHT SIZE 

WIDTH HEIGHT WIDTH HEIGHT WIDTH HEIGHT 

2/6 FIXED SL 32 9/16 1 32 9/16 16 33 5/16 16 1/2 24 7/16 8 3/8 

3/0 FIXED SL 38 9/16 1 38 9/16 16 39 5/16 16 1/2 30 7/16 8 3/8 

4/0 FIXED SL 50 9/16 1 50 9/16 16 51 5/16 16 1/2 42 7/16 8 3/8 

5/0 XO or OX 59 1/4 1 59 1/4 16 60 16 1/2 51 1/8 8 3/8 

6/0 XO or OX 71 1/4 1 71 1/4 16 72 16 1/2 63 1/8 8 3/8 

8/0 XO or OX 95 1/4 1 95 1/4 16 96 16 1/2 87 1/8 8 3/8 

9/0 XOO or OOX 106 13/16 1 106 13/16 16 107 9/16 16 1/2 98 11/16 8 3/8 

9/0 OXO 109 7/8 1 109 7/8 16 110 5/8 16 1/2 101 3/4 8 3/8 

10/0 OXXO 115 3/4 2 57 13/16 16 116 1/2 16 1/2 49 11/16 8 3/8 

12/0 XOO or OOX 142 13/16 2 71 11/32 16 143 9/16 16 1/2 63 7/32 8 3/8 

12/0 OXO 145 7/8 2 72 7/8 16 146 5/8 16 1/2 64 3/4 8 3/8 

12/0 OXXO 139 3/4 2 69 13/16 16 140 1/2 16 1/2 61 11/16 8 3/8 

42 

PATIO SYSTEM INFORMATION 

DESCRIPTION WIDTH HEIGHT DAYLIGHT SIZE 

2/6 X R.H. 29.500 76.188 24.188 70.750 

3/0 X R.H. 35.500 76.188 30.188 70.750 

4/0 X R.H. 47.500 76.188 42.188 70.750 

2/6 X 8/0 R.H. 29.500 92.188 24.188 86.750 

3/0 X 8/0 R.H. 35.500 92.188 30.188 86.750 

4/0 X 8/0 R.H. 47.500 92.188 42.188 86.750

Anchor Screw 

#10 x 1 PPH SMS 

½" 

Anchor Screw 


½" 

Frame Assembly Screw 

#10 x 3" PFH SMS 

Rough Opening Screw 

#8x3"PPH 

Astragal Screw 

#10 - 32 x 1 1/4" PPH SS MS 

Handle Set Keeper Screw 


½" 

#6 x 3/4" TEK PH Screw 

SCREW CHART 

43 

Mortise Screw 

#8 x 1" PFH MS 

Handle Set Screw 

#10 x 7/16" PH Hex Drive MS 

Colored Handle Set Screw 

#10 x 2 1/4" Phillips Oval MS 

Colored Foot Bolt Screw 

#8 x 1 S.S. PPH SMS 

½" 

Colored Foot Bolt Screw 

#8 x 9/16" S.S. PPH SMS 

Colored Foot Bolt Keeper 

Screws 

#8 x 1" S.S. PPH SMS 

Transom & M.E.U. Screw 

#8 x 2" PPH SMS

1687 Woodlands Dr. Maumee, OH 43537 

1-800-THERMATRU (843-7628) 

www.thermatru.com 

Therma-Tru Doors is an operating company of Fortune Brands, Inc. 

© 2005 Therma-Tru Corp. 12-31-04 

Part # SLBOOK04

Therma-Tru Slim-Line Sliding Patio Door Assembly and Installation

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