Volume Damper Low-Leak OBD 3000-0BDLL-48X24 Residential Registers & Grilles Delivers supply air in a

Delivers supply air in a 360°air pattern

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 4" Duct Opening  (front blades parallel to shortest dimension)

3/16” holes on 1/4” staggered centers Extruded aluminum frame with signature line marks Perforated material 58% free area Countersunk mounting holes for flush appearance with color matching Phillips posi- drive screws Rust resistant pre-coat with durable powder finish Soft White

BD - field installable Bowtie Damper (available on even sizes 6"-14")

Volume Damper Low-Leak OBD 3000-0BDLL-48X24 Residential Registers & Grilles Delivers supply air in ah3. 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.