Volume Damper Low-Leak OBD 3000-0BDLL-38X32 Commercial 700 CB40 - four way

700 CB40 - four way * 6x6 thru 20x20 diffuser sizes * Square to round No Labor Collar * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700 CB40 0 - opposed blade damper * 700CB FR - U

CSFM California State Fire Marshal listed

Spiral pipe diameter must be 4” larger than the width of the grille

Louvers designed with rolled rib for maximum strength and rigidity

Collar sizes available in 6”–10”

Volume Damper Low-Leak OBD 3000-0BDLL-38X32 Commercial 700 CB40 - four wayh3. 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.