Volume Damper Low-Leak OBD 3000-0BDLL-62X28 Residential Registers & Grilles For damper free area chart

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

700 CB40 - four way * 6x6 thru 20x20 diffuser sizes * Square to round No Labor Collar * 2x2 galvaneal steel panel with seismic support holes * Soft White Options * 700 CB40 0 - opposed blade damper * 700CB FR - U

Face set in an outer T-Bar filter grille frame

102 PC - corner

Stamped steel face with roll formed frame

Volume Damper Low-Leak OBD 3000-0BDLL-62X28 Residential Registers & Grilles For damper free area charth3. 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.