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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Interlocking steel roll-formed blades
For damper free area chart B click here * 2565 - Round fire door for vertical mount only
14 GA 304 SS Construction
three or four diffusers per panel * Countersunk sunk screwholes for ceiling mount * Standard Color or Designer Color Finish available on this product
Volume Damper Low-Leak OBD 3000-0BDLL-70X48 Residential Registers & Grilles Interlocking steel roll-formed bladesh3. 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.
