Volume Damper Low-Leak OBD 3000-0BDLL-72X66 T-Bar Check Out The All About

Check Out The All About Spirals page

are enclosed in the valve to assure trouble free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Steel multi-shutter damper * Soft White Options * 845 O - steel lever operated opposed blade damper * Tamper proof screws * Standard Color

Designed for large volume air delivery

Center margins are mounted on the backside of the grille for a streamlined continuous look

Volume Damper Low-Leak OBD 3000-0BDLL-72X66 T-Bar Check Out The All Abouth3. 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.