Volume Damper Low-Leak OBD 3000-0BDLL-70X30 T-Bar Spring actuated curtain-type fire damper

Spring actuated curtain-type fire damper with 2 1/4" round connection for horizontal or vertical mount

Countersunk mounting holes with color matching Philips posi-drive screws

PERFORMANCE DATA 915 Series Engineering/Performance Data

Louvers will be Parallel to the First Dimension

450 Series Engineering/Performance Data

Volume Damper Low-Leak OBD 3000-0BDLL-70X30 T-Bar Spring actuated curtain-type fire damperh3. 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.