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904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)
Hand operated lever for easy filter access and cleaning
* 2602 - Square or rectangular spring actuated (6) for horizontal or vertical mount
Hinged perforated face with screwdriver access to release
One piece stamped steel frame on most common sizes
Opposed Blade Volume Damper 3000-0BD-24X32 Specialty Products 904 - Double Deflection Adjustableh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.
