Volume Damper Low-Leak OBD 3000-0BDLL-30X24 Step Down Ceiling Diffuser Standard Features 1” rim size

Standard Features 1” rim size (2” larger than nominal duct size / order size) 14 gauge steel construction Countersunk mounting holes for a flush appearance 1-27/32” Wide x 11/32” High slots on staggered centers

Concealed mounting holes

700 CB20C - corner

Insect Screen

Volume Damper Low-Leak OBD 3000-0BDLL-30X24 Step Down Ceiling Diffuser Standard Features 1” rim sizeh3. 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.