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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23
Narrow ceiling grid dimples for 9/16" T-Rails
3/16” holes on 1/4” staggered centers
Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension
904 - Double Deflection Adjustable Aluminum Blade Grille For a 18" x 6" Duct Opening (front blades parallel to shortest dimension)
Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws
Volume Damper Low-Leak OBD 3000-0BDLL-72X72 T-Bar Narrow ceiling grid dimples forh3. 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.
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