Volume Damper Low-Leak OBD 3000-0BDLL-34X10 Commercial 904 - Double Deflection Adjustable

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 30" Duct Opening (front blades parallel to shortest dimension)

Heavy Duty Construction

For damper free area chart A click here * 2663 - Out-of-Airstream fire door

Ideal for supply air in the toe space areas between kitchen cabinets

Maximum single section size 24"x24"

Volume Damper Low-Leak OBD 3000-0BDLL-34X10 Commercial 904 - Double Deflection Adjustableh3. 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.