Volume Damper Low-Leak OBD 3000-0BDLL-68X46 Step Down Ceiling Diffuser Minimum size is 4"x4"

Minimum size is 4"x4"

104 - four way * 2x2 galvaneal steel panel with seismic support holes * Square to round No Labor Collar * Soft White Options * 104 D - steel multi-shutter damper * 104 O - steel opposed blade damper * 104 FR

Hinged removable extruded aluminum face frame with signature line marks

Standard Features * For large volume air delivery * For evaporative coolers or central blower systems * Adjustable directional dampers with shut-off * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White

Standard Features * 2533 - Square or rectangular for vertical mount only

Volume Damper Low-Leak OBD 3000-0BDLL-68X46 Step Down Ceiling Diffuser Minimum size is 4"x4"h3. 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.