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Multiblade Static Fire Dampers
The FD-MB Series of static fire dampers is available in 1-1/2 & 3 hour ratings and carry listings with UL, ULC & California State Fire Marshal. The FD-MB Series of multibladed dampers are available in standard 3V blades as well as Airfoil shaped blades for superior pressure drop performance, and are acceptable for use in 'Fans Off' systems
- Available with a full range of factory sleeves and duct transitions
- Available with either 3V style blades (FD-MB-3V) or Airfoil Blade designs (FD-MB-AF).
- True Round Model Available (FD-RD)
- Front access and “out of wall” grille mount versions available (FD-OW)
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