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Axial Upblast Belt Drive Exhaust Ventilator

  • Item # 4YY28
  • My Part #
  • Mfr. Model # 4YY28
  • Catalog Page # 2963
  • UNSPSC # 40101502
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  • Shipping Weight 818.0 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

This exhaust ventilator is for use in industrial and commercial buildings, including warehouses, manufacturing facilities, foundries, and laboratories. It's highly weather-resistant, with housings constructed of heavy-gauge galvanized steel, bolted seams, and reinforced edges for added strength. Drive frames are die-formed, galvanized structural steel, providing a rigid platform for motors, shafts, bearings, and drives. Fabricated steel propellers have steeply pitched blades to generate low sound levels. Integral butterfly dampers prevent unwanted backdrafts and have magnetic latches to minimize damper flutter when not in use. Built-in lifting lugs speed installation; the windband is removable for easy inspection.

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Technical Specs

  • Item Exhaust Ventilator
  • Blade Dia. 54"
  • Propeller Material Steel
  • Max. Inlet Temp. (Deg. F) 120
  • Bearing Type Regreasable Pillow Block
  • RPM Range 291 to 496
  • Speed Controllable NO
  • Mounting Location Roof
  • Base Height (In.) 1-3/4
  • Overall Height (In.) 45
  • Overall Dia. (In.) 66 1/2
  • Shaft Dia. Sheave End (In.) 1 1/4
  • Shaft Dia. Propeller End (In.) 1 1/4
  • Housing Material Galvanized Steel
  • Agency Compliance UL/cUL 705 Listed
  • Requires Roof Curb For New Installations
  • Adj. 12 3/8"H Roof Curb Stock No. 2ZV87
  • Recommended 12 In. Fixed Curb Item No. 3AZJ8
  • Dimension A 66-1/2"
  • Dimension B 61-1/4"
  • Dimension C 28"
  • Dimension D 45"
  • Dimension E 62-5/8"
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