Opposed Blade Volume Damper 3000-0BD-58X56 Smoke-Fire Damper Standard Features * Round 1-1/2

Standard Features * Round 1-1/2 hour fire damper * Horizontal or Vertical installation * UL and California State Fire Marshall approved * Damper construction meets NFPA 90A requirements * Stainless steel curtain * 16 gauge steel frame * UL listed fusible link

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

Extended sleeve ( See Model 2702)

Five air patterns available

Opposed Blade Volume Damper 3000-0BD-58X56 Smoke-Fire Damper Standard Features * Round 1-1/2h3. 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.