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blades prevent metal on metal rattle
904 - Double Deflection Adjustable Aluminum Blade Grille For a 42" x 18" Duct Opening (front blades parallel to shortest dimension)
PERFORMANCE DATA 845 Series Engineering/Performance Data
2" ADC compliant round collar with bead for ease of installation
Designed to minimize vision into the air duct
Aluminum Door Grille 4100-10X4 Finish:Designer Color - Aluminum Paint blades prevent metal on metalStandard 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 *
