Balanced Ventilation Doors


  • Heights: from 7 feet to 12 feet
  • Widths: from 7 feet to 16 feet
Door Frame
  • 8" Steel Channel 44W (300W)
  • 15mm rebar hoops (welded to mainframe for shotcrete installation)
Door Leafs
  • 2" x 3" HSS tubing 50W (350W)
  • 3/16" steel plate skin 44W (300W)
  • Extra Heavy Duty Hinges
  • Greaseless (maintenance free)
Balance Arms
  • Extra Heavy Duty Balance Plates
    (drive mechanisms)
  • Electro-Hydraulic Actuator and Electro-Pneumatic
  • 115V.A.C., 20 Amp, single phase c/w Hydraulic
    Power Pack (develops 3,680 lbs. of thrust).
Control Panel
  • NEMA 4X enclosure
  • CSA approved buttons and switches
Safety Devices
  • Warning horns (regulation)
  • Flashing lights (regulation)
  • Trip sensors (regulation)
  • Safety Zone (optional)
  • Safety Yellow (epoxy system)
  • Primer: Zinc Rich Primer
  • Preparation: Commercial Sand Blast

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