Volume Damper Low-Leak OBD 3000-0BDLL-72X56 past 12 months Airfoil blades individually adjustable on

Airfoil blades individually adjustable on 3/4" centers

2" ADC compliant round collar with bead for ease of installation (square sizes only)

Maximum dimension 60w x 52h

Double deflection surface mount grille with adjustable airfoil blades

5/32” crossbars

Volume Damper Low-Leak OBD 3000-0BDLL-72X56 past 12 months Airfoil blades individually adjustable onh3. 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.