Opposed Blade Volume Damper 3000-0BD-64X38 Smoke-Fire Damper 3-way register with stiffened 1/2"

3-way register with stiffened 1/2" fan shaped louvers for silent operation

Available in 4" through 29" round

Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

Performance Data

Opposed Blade Volume Damper 3000-0BD-64X38 Smoke-Fire Damper 3-way register with stiffened 1/2"h3. 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.