Volume Damper Low-Leak OBD 3000-0BDLL-64X20 T-Bar Step down core designed for

Step down core designed for 4-way uniform air distribution

Extruded aluminum surface mount frame with signature line marks

Designed for large volume air delivery

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice return air grille * Surface mount grille with

listed Fire-Resistance Diffusers * TVB - Thermal Vapor Blanket * Square collar

Volume Damper Low-Leak OBD 3000-0BDLL-64X20 T-Bar Step down core designed forh3. 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.