Model VFD-30D-B 3 hour • dynamic rated - fire damper curtain style blade


The VFD-30D-B fire damper employs out of the air stream curtain style blades for point-of-origin control of fire in static and dynamic HVAC systems. The VFD-30D-B is qualified to 4,000 ft/min (20.4 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions with fire resistance ratings up to 4 hours.