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Performance Data With Opposed Blade Damper
904 - Double Deflection Adjustable Aluminum Blade Grille For a 40" x 18" Duct Opening (front blades parallel to shortest dimension)
Heavy gauge cold roll steel
listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square collar Additional Drawings * 825 MA
Mill finish
Aluminum Airfoil Blade Grille - Vertical Fixed Blade 908-18X14 past 12 months Performance Data With Opposed BladeStandard Features * Extruded . 055 T6 aluminum 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 * 908 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
