Volume Damper Low-Leak OBD 3000-0BDLL-66X66 Specialty Products Back blades are parallel to

Back blades are parallel to the longest dimension

Install with louvers in up or down position for best duct concealment

Front blades parallel to shortest dimension

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice face *

Vertical mount only

Volume Damper Low-Leak OBD 3000-0BDLL-66X66 Specialty Products Back blades are parallel toh3. 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.