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  • Roll formed blades are heavy aluminum construction.
  • Motors are heavy duty, high efficiency construction; available in totally enclosed, open, two speed or explosion proof.
  • Available in galvanized or all aluminum housing.
  • Painted steel tubing, bearing supports and motor supports are standard. All aluminum construction is available for a light weight option.
  • Weatherproof construction.
  • Neoprene gasket seal is standard.
  • Automatic butterfly dampers pivot on steel pins precision fitted to permanently lubricated bushings.
  • Sizes 26″ through 86″.
  • Magnetic latches are standard