Volume Damper Low-Leak OBD 3000-0BDLL-30X14 Commercial 1/2" spacing dual angular louvers

1/2" spacing dual angular louvers for strength and maximum free area

3-hour fire resistance rating

listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square collar Additional Drawings * 825 MA

Egg Crate T-Bar Filter Grille 2"

available with two or four diffusers per panel

Volume Damper Low-Leak OBD 3000-0BDLL-30X14 Commercial 1/2" spacing dual angular louversh3. 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.