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Square collar designed for 22" x 22" duct
Standard Features * Full size fixed bar blade T-Bar lay-in return air grille *
904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 30" Duct Opening (front blades parallel to shortest dimension)
916 Series Engineering/Performance Data
Note: Listed Size Is Nominal Duct Opening / Nominal Filter Size
Aluminum Door Grille 4000-32X20 Finish:Driftwood Tan Square collar designed for 22"Standard Features * 4000 door core grille with single frame * 4100 door core grille with additional loose frame * . 060 T6 extruded aluminum construction * Completely vision proof * High air capacities * Will accommodate door thickness ranging from 1 1 4" to 2 1 4" * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Driftwood Tan Options * 1310 Series stainless steel door grille * Tamper proof screws *
