Opposed Blade Volume Damper 3000-0BD-70X18 Smoke-Fire Damper Heavy Duty Construction

Heavy Duty Construction

One piece curved frame with gasket fits flush to spiral pipe

Mill finish

Access door with 1-3/8" deep steel roll formed frame

Blade lock to secure blades once the product is activated

Opposed Blade Volume Damper 3000-0BD-70X18 Smoke-Fire Damper Heavy Duty Constructionh3. 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.