Opposed Blade Volume Damper 3000-0BD-52X20 Smoke-Fire Damper listed Fire-Resistance Diffusers * TVB

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

91 Series Submittal

Options (must specify when ordering)

Perforated Face Grille

055 T6 extruded aluminum surface mount supply diffuser * Four air patterns: CB10 - one way

Opposed Blade Volume Damper 3000-0BD-52X20 Smoke-Fire Damper listed Fire-Resistance Diffusers * TVBh3. 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.