Opposed Blade Volume Damper 3000-0BD-44X40 Residential Registers & Grilles Heavy duty steel honeycomb construction

Heavy duty steel honeycomb construction

Standard Features * 1 1/2 hour rated fire damper * 2549 - Round damper for vertical mount only

Rust-resistant pre-coat with durable powder finish

Louvers will be Parallel to the First Dimension

Standard Features * 2633 - Square or rectangular out-of-airstream fire damper for vertical mount only

Opposed Blade Volume Damper 3000-0BD-44X40 Residential Registers & Grilles Heavy duty steel honeycomb 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.