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Square collar designed for a 20” × 20”
Performance Data - No Damper
back blades parallel to longest dimension
Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 14" Duct Opening (front blades parallel to shortest dimension)
Steel Blade Grille - Horizontal Fixed Blade 938-20X12 past 12 months Square collar designed for aStandard Features *Surface mount return air grille * 0 fixed blades parallel to shortest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Soft White Options * 938 O recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T T Bar mount * 905 HD reinforced construction * 905 IS insect screen * 1335 1338 Series stainless steel version * Tamper proof screws
US$ 170.00
US$ 799.50
US$ 51.00
US$ 1694.00
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US$ 1375.00
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