Volume Damper Low-Leak OBD 3000-0BDLL-70X36 past 12 months with 53% free area

with 53% free area

Square to round 2" collar with roll formed retention bead

T-Bar Fixed Core Step Down Diffuser

Lever operated Opposed Blade Damper

Volume Damper Low-Leak OBD 3000-0BDLL-70X36 past 12 months with 53% free areah3. 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.