Volume Damper Low-Leak OBD 3000-0BDLL-64X30 Residential Registers & Grilles Holds up to a 4"

Holds up to a 4" filter (not included) with filter retention tabs (FG4)

904 - Double Deflection Adjustable Aluminum Blade Grille For a 32" x 18" Duct Opening (front blades parallel to shortest dimension)

Options (must specify when ordering)

Building materials rated 2 hours or less

Volume Damper Low-Leak OBD 3000-0BDLL-64X30 Residential Registers & Grilles Holds up to a 4"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.