Volume Damper Low-Leak OBD 3000-0BDLL-68X34 past 12 months Back blades are parallel to

Back blades are parallel to the longest dimension

2 position adjustment for heating and cooling seasons

All steel parts with galvanized finish or zinc coating

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

Standard Features * Step down core design allowing for uniform air distribution * Four way air diffusion * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft white Options * 100 - diffuser only (no damper) * 100 D - diffuser with steel multi-shutter damper * 100 O - diffuser with steel lever operated opposed blade damper * No Labor Collar * Standard Color or Designer Color Finish available on this product

Volume Damper Low-Leak OBD 3000-0BDLL-68X34 past 12 months Back blades are parallel toh3. 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.