Volume Damper Low-Leak OBD 3000-0BDLL-72X28 past 12 months 1x2 T-Bar (10" x 22"

1x2 T-Bar (10" x 22" duct)

Spiral pipe diameter must be 4” larger than the width of the grille

Extruded aluminum frame with signature line marks

2x4 * Soft White

Volume Damper Low-Leak OBD 3000-0BDLL-72X28 past 12 months 1x2 T-Bar (10" x 22"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.