Volume Damper Low-Leak OBD 3000-0BDLL-30X12 Smoke-Fire Damper 12" and 14") * HVD

12" and 14") * HVD OR - factory installed opposed radial damper (sizes 6"-14") * HVD FR - U

with color matching Phillips Pozidriv screws

4-Way ceiling register with stiffened 1/2" fan shaped louvers for silent operation

Uniform 360 degree discharge pattern

Volume Damper Low-Leak OBD 3000-0BDLL-30X12 Smoke-Fire Damper 12" and 14") * HVDh3. 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.