Volume Damper Low-Leak OBD 3000-0BDLL-54X44 Commercial 3/16” crossbars

3/16” crossbars

916 Series Engineering/Performance Data

3 hour fire resistance rating

For evaporative cooling or high velocity exhaust applications

904 - Double Deflection Adjustable Aluminum Blade Grille for a 16" x 8" Duct Opening   (front blades parallel to shortest dimension)

Volume Damper Low-Leak OBD 3000-0BDLL-54X44 Commercial 3/16” crossbarsh3. 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.