Air Filter - Pflugerville Independent School District

F. Manufacturer shall guarantee the integrity of the filter pack to 2.0” w.g.
G. Performance Guarantee: Manufacturer shall provide a written performance guarantee to the
owner at the time of bid and during submittal phase. Filters not including a written performance
guarantee equal to that of the Camfill-Farr 30/30 are unacceptable unless the bidder includes an
allowance to the owner at time of bid to cover any additional future costs associated with the
failure of the proposed product to meet these specifications. AT NO TIME WILL THE OWNER
ACCEPT ADDITIONAL POST-BID COSTS FOR PRODUCTS UNABLE TO MEET THIS
SPECIFICATION
H. Air filters shall be medium efficiency ASHRAE pleated panels consisting of cotton and
synthetic media, welded wire media support grid, and beverage board enclosing frame.
I. Select filter media that is UL listed, Class I or Class II.
J. Manufacturer's published performance characteristics shall be supported by approved
independent laboratory test reports.
K. When dust holding capacity is not published in the manufacturer's literature the submittal data
shall include recent certified documentation of performance by an approved independent test
laboratory.
Filter Construction
L. Filter media shall be a cotton and synthetic blend, lofted to a uniform depth of 0.15”, and formed
into a uniform radial pleat. Polyester Media will not be accepted.
M. A welded wire grid, spot-welded on one-inch centers and treated for corrosion resistance shall be
bonded to the downstream side of the media to maintain radial pleats and prevent media
oscillation.
N. An enclosing frame of no less than 28-point high wet-strength beverage board shall provide a rigid
and durable enclosure. The frame shall be bonded to the media on all sides to prevent air bypass.
Integral diagonal support members on the air entering and air exiting side shall be bonded to the
apex of each pleat to maintain uniform pleat spacing in varying airflows.
O. Filters shall be at least 12 pleats per liner foot for 1” deep filters, 15 pleats per linear foot for 2”
deep filters, and 11 pleats per linear foot for the 4” deep filters.
Performance
P. The filter shall have a Minimum Efficiency Reporting Value of MERV 8 when evaluated under the
guidelines of ASHRAE Standard 52.2-2007. It shall also have a MERV-A of 8 when tested per
Appendix J of the same standard. The media shall maintain or increase in efficiency over the life
of the filter.
Q. Initial resistance to airflow shall not exceed 0.23”, 0.31” or 0.27” w.g. at an airflow of 350,
500 or 492 fpm on 1”, 2” or 4” deep models respectively.
R. The filter shall have an Energy Cost Index (ECI) value of five stars for High Capacity filters, and
three stars for the Standard Capacity.
S. The filter shall be listed by Underwriters Laboratories as UL Class 900.
T. Manufacturer shall provide evidence of facility certification to ISO 9001:2008.
U. Manufacturer shall guarantee the integrity of the filter pack to 2.0” w.g.
V. Performance Guarantee: Manufacturer shall provide a written performance guarantee to the
owner at the time of bid and during submittal phase. Filters not including a written performance
guarantee equal to that of the Camfil-Farr 30/30 are unacceptable unless the bidder includes an
allowance to the owner at time of bid to cover any additional future costs associated with the
failure of the proposed product to meet these specifications. AT NO TIME WILL THE OWNER
ACCEPT ADDITIONAL POST-BID COSTS FOR PRODUCTS UNABLE TO MEET THIS
SPECIFICATION.
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