Volume Damper Low-Leak OBD 3000-0BDLL-48X16 Residential Registers & Grilles To adjust diffuser

To adjust diffuser

Square collar designed for 22" x 22" duct

Standard Features * Single plaque ceiling diffuser * 360 air diffusion * Hinged-down core for easy duct access * No Labor Collar * Seismic support hangers * Available sizes: 6"-10"

Blades are parallel to the shortest dimension

Opposed Blade Damper standard on 4" widths

Volume Damper Low-Leak OBD 3000-0BDLL-48X16 Residential Registers & Grilles To adjust diffuserh3. 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.