Volume Damper Low-Leak OBD 3000-0BDLL-64X58 Commercial Front blades are parallel to

Front blades are parallel to the shortest dimension

1 for each end)

Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper

Performance Data With Multi-Shutter Damper

Volume Damper Low-Leak OBD 3000-0BDLL-64X58 Commercial Front 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.