Opposed Blade Volume Damper 3000-0BD-40X20 past 12 months Standard Features * Adjustable curved

Standard Features * Adjustable curved blade

cross bars

1 for each end)

Vertical mount only

Opposed Blade Volume Damper 3000-0BD-40X20 past 12 months Standard Features * Adjustable curvedh3. 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.