Volume Damper Low-Leak OBD 3000-0BDLL-28X22 Smoke-Fire Damper Face set in an outer

Face set in an outer T-Bar filter grille frame

Fractional

floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application

All steel galvaneal construction

For ceiling or sidewall applications

Volume Damper Low-Leak OBD 3000-0BDLL-28X22 Smoke-Fire Damper Face set in an outerh3. 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.