Volume Damper Low-Leak OBD 3000-0BDLL-68X22 past 12 months Multi-Shutter Damper standard on 6"

Multi-Shutter Damper standard on 6" widths and larger

Square collar designed for a 20” × 20”

700 CB20C - corner

904 - Double Deflection Adjustable Aluminum Blade Grille For a 24" x 24" Duct Opening (front blades parallel to shortest dimension)

Volume Damper Low-Leak OBD 3000-0BDLL-68X22 past 12 months Multi-Shutter Damper standard on 6"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.