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21-1/2", Assembled Downblast Ventilator, Belt-Drive

  • Item # 3GY71
  • My Part #
  • Mfr. Model # 3GY71
  • Catalog Page # 3022
  • UNSPSC # 40101502
Downblast Vent,Belt Drive,21-1/2 In close

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  • Shipping Weight 134.0 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 designed to meet the general clean air exhaust requirements for industrial and commercial buildings. Rugged and reliable construction makes fan capable of withstanding severe exhaust conditions. This ventilator's spun aluminum construction features a fully rolled windband bead for increased stability and easy transport. Fresh outside air is drawn in under the motor cover to maximize motor life. Drive frame is internally isolated from the rest of the unit through use of neoprene isolators for long life and quiet operation; no steel-to-steel contact. Motors, sheaves, and belts are packed separately when complete, unassembled ventilator with drive package is ordered.

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Technical Specs

  • Item Downblast Ventilator
  • Drive Type - Roof Ventilators Belt Drive
  • Duty Rating - Roof Ventilators Standard
  • Drive Package With Motor Included Yes
  • Voltage - Roof Ventilators 115/208/230
  • Motor HP - Roof Ventilators 1-1/2
  • Base Square Size - Roof Ventilators 30" x 30"
  • Number of Speeds 1
  • Mounting Location - Roof Ventilators Roof
  • Wheel Dia. 21-1/2"
  • Item - Roof Ventilators Downblast Ventilator
  • CFM @ 0.000-In. SP 6032
  • CFM @ 0.125-In. SP 5870
  • CFM @ 0.250-In. SP 5682
  • CFM @ 0.375-In. SP 5473
  • CFM @ 0.500-In. SP 5301
  • CFM @ 0.625-In. SP 5124
  • CFM @ 0.750-In. SP 4925
  • CFM @ 0.875-In. SP 4698
  • CFM @ 1.000-In. SP 4450
  • CFM @ 1.250-In. SP 3751
  • Sones @ 0.125-In. SP @ 5 Ft. 19.6
  • Sones @ 0.250-In. SP @ 5 Ft. 18.9
  • Sones @ 0.500-In. SP @ 5 Ft. 18.1
  • Phase 1
  • Hz 60
  • Max. Operating Amps 21/10.5
  • Max. BHP 1.56
  • RPM 1090
  • Base Height 1 3/4"
  • Overall Dia. 35-1/2"
  • Overall Height 34-3/8"
  • Shaft Dia. Wheel End 3/4"
  • Max. Inlet Temp. 180 Degrees
  • Housing Material Spun Aluminum
  • Wheel Material Aluminum
  • Wheel Type Backward Inclined Centrifugal
  • Speed Controllable No
  • Adj. 12 3/8"H Roof Curb Stock No. 2ZV83
  • Adj. 6 3/8"H Roof Curb Stock No. 4C454
  • Assembled/Unassembled Assembled
  • Recommended 12 In. Fixed Curb Item No. 2RB79
  • Recommended 8 In. Fixed Curb Item No. 4HX41
  • Agency Compliance AMCA Sound & Air, UL/cUL 705, CSA Certified Motor
  • Dimension A 30"
  • Dimension B 35-1/2"
  • Dimension C 34-3/8"
  • Dimension D 5-1/2"
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