Volume Damper Low-Leak OBD 3000-0BDLL-62X34 Commercial Countersunk mounting holes for flush

Countersunk mounting holes for flush appearance

Stamped steel face with roll formed frame

Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less

Designed for large volume air delivery

Volume Damper Low-Leak OBD 3000-0BDLL-62X34 Commercial Countersunk mounting holes for flushh3. 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.