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blades prevent metal on metal rattle
Adjustable directional dampers with shut-off
12" and 14") * HVD OR - factory installed opposed radial damper (sizes 6"-14") * HVD FR - U
T-20 Tamper Proof Screws
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 14" Duct Opening(front blades parallel to shortest dimension)
Steel Blade Single Deflection Diffuser 932-18X4 Damper:without Damper blades prevent metal on metalStandard Features *Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi drive screws * Single deflection diffuser with adjustable steel blades * steel blades are parallel to shortest dimension * Allows 2 way air deflection on one plane * Soft White Options * 932 O with recessed screwdriver operated opposed blade damper * 1331
