Volume Damper Low-Leak OBD 3000-0BDLL-40X16 past 12 months 5/32” crossbars

5/32” crossbars

3/16” crossbars

Countersunk mounting holes for flush appearance with stainless sheet metal screws

Nylon bushings on adjustable blades to prevent metal on metal rattle

Volume Damper Low-Leak OBD 3000-0BDLL-40X16 past 12 months 5/32” crossbarsh3. 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.