Volume Damper Low-Leak OBD 3000-0BDLL-66X20 past 12 months 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 38" x 18" Duct Opening (front blades parallel to shortest dimension)

Maximum dimension 60x60

* 2534 - Square or rectangular spring actuated (6) for horizontal or vertical mount

with 75% free area Options 14 GA 304 SS Construction 12 GA (

For evaporative coolers or central blower systems

Volume Damper Low-Leak OBD 3000-0BDLL-66X20 past 12 months 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.