Volume Damper Low-Leak OBD 3000-0BDLL-68X24 past 12 months Building materials rated 3 hours

Building materials rated 3 hours or less

Options * Sleeve variations h3

Designed for use in walls

Available in 4" through 24" round

14" * Soft White Options * Field installable Bowtie Damper (BD) * TVB - Thermal Vapor Blanket * HVD - Hinge Down Face

Volume Damper Low-Leak OBD 3000-0BDLL-68X24 past 12 months Building materials rated 3 hoursh3. 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.