Volume Damper Low-Leak OBD 3000-0BDLL-44X24 Accessories Install with louvers in up

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

Designed for return applications and as a vented access door to equipment

4-way reversible door on square sizes

Filter retention tabs

Volume Damper Low-Leak OBD 3000-0BDLL-44X24 Accessories Install with louvers in uph3. 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.