SERIES GE 2012_SERIES GE 28-3-11.qxd - Gilberts (Blackpool)

SERIES GEEggcrate GrillesIntroductionGilberts GE Series provides a comprehensive andtraditional range of Eggcrate type grilles to suit alltypes of extract application in ceiling and walls.Attractively styled with a 13mm square Eggcrate typecore the GE is available in either a 32mm flangeborder frame suitable for all general purpose sidewallSeries Options:and ceiling installations or a channel frame borderparticularly suited for lay in, suspended ceilingapplications. The 45º core option on GECA/45 isdesigned to offer reduced visability through the core(depending on viewing angle).TYPE GECA- 13mm square Eggcrate grille in 32mm flange frame.TYPE GECA/45 - 13mm square Eggcrate grille with directional 45º core.TYPE GEC- 13mm square Eggcrate grille in channel border frame.TYPE GEC/45 - 13mm square Eggcrate grille with directional 45º core.Both GECA and GEC units are available completewith screw driver operated, rear mounted opposedblade volume control dampers as well as otheraccessories such as knob operated dampers andspecial fixings such as concealed bracket. Due tolimited access through the core these accessories arenot available with the 45º core.Standard finish on the GE Series is a PolyesterPowder White. Other special colours and finishes areavailable on request.Features- 13mm Eggcrate Core.- Flange or Channel Frame Border.- Wide Flexible Size Range.- Extruded Aluminium Construction.- 0º or 45º Eggcrate CorePerformanceDataSelectionProcedureAll GE type units can be sized and selectedfrom the nomogram up to a maximum size of1200 x 1200.References used:PRESSURE: All pressures are in Pa (N/m 2 ).SOUND: measured in average dBA level.K Factor (free area) on the GE Series is approx90%.Referring to table determine the maximumpermissible velocity relative to the volume forthe application. Reference can then be madeto the Series GE sizing nomogram from whichthe terminal size can readily be determinedand additional data such as sound levels, jetvelocity and pressure drops calculated.Please note that noise level data is onlyavailable down to NC20. For selection at lowernoise levels please consult with our technicaldepartment.Table of Recommended VelocitiesSpace Served Sound Level Air 0.05 0.25 1.0db ‘A’ Scale Volume m 3 /s m 3 /s m 3 /sBroadcasting & Recording 20 - 25 Velocity m/s 2.0 1.5 1.0StudiosBoard or Conference Rooms, 30 Velocity m/s 3.0 2.5 2.0Churches, Concert Halls,Hospitals, Lecture Theatres,Offices, Hotels, Private HousesBanks, Courtrooms, 35 Velocity m/s 3.5 3.0 2.5General Offices, Libraries,School ClassroomsCinemas, Department Stores, 40 Velocity m/s 4.0 3.5 3.0RestaurantsComputer Rooms, 45 Velocity m/s 4.5 3.75 3.25SupermarketsLaundries and Kitchens, 50 Velocity m/s 5.0 4.25 3.5Typing Pools, Pools,Sports ArenasLight Engineering Factories,Heavy Engineering Factories 60 Velocity m/s 8.0 6.5 5.02