Volume Damper Low-Leak OBD 3000-0BDLL-72X20 T-Bar Standard Features Double deflection surface

Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension

Accessory to the 90 Series

* 2634 - Square or rectangular Spring actuated (6) out-of-airstream fire damper for horizontal or vertical mount

Step down core designed for 4-way uniform air distribution

904 - Double Deflection Adjustable Aluminum Blade Grille For a 14" x 10" Duct Opening (front blades parallel to shortest dimension)

Volume Damper Low-Leak OBD 3000-0BDLL-72X20 T-Bar Standard Features Double deflection surfaceh3. 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.