Volume Damper Low-Leak OBD 3000-0BDLL-24X32 Residential Registers & Grilles One piece stamped steel frame

One piece stamped steel frame on most common sizes

Multi-Shutter Damper standard on 6" widths and larger

Standard Features * Removable core * Available in five air patterns * 22 gauge steel flush core provides uniform air distribution * Square to round No Labor Collar (6" thru 18") * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700DVD D - steel multi-shutter damper * 700DVD O - opposed blade damper * 700DVD FR - U

945 Series Submittal

All steel galvaneal construction

Volume Damper Low-Leak OBD 3000-0BDLL-24X32 Residential Registers & Grilles One piece stamped steel frameh3. 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.