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Accessory to the 90 Series
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
Double deflection surface mount grille with adjustable airfoil blades
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 24" Duct Opening (front blades parallel to shortest dimension)
Performance Data With Opposed Blade Damper
Steel Blade Grille - Horizontal Fixed Blade 938-20X20 Damper:without Damper Accessory to the 90 SeriesStandard 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
