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Downblast Vent,Belt Drive,18-1/2 In close
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Downblast Vent, Belt Drive, 18-1/2 In

Price $2,042.00 / each

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Required Accessories

  • Item # 3GY70
  • Mfr. Model # 3GY70
  • UNSPSC # 40101502
  • Catalog Page # 4142
  • Shipping Weight 122.0 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

Technical Specs

  • Item Downblast Ventilator
  • Drive Type Belt
  • Wheel Dia. 18-1/2"
  • CFM @ 0.000-In. SP 4608
  • CFM @ 0.125-In. SP 4508
  • CFM @ 0.250-In. SP 4401
  • CFM @ 0.375-In. SP 4290
  • CFM @ 0.500-In. SP 4179
  • CFM @ 0.625-In. SP 4046
  • CFM @ 0.750-In. SP 3900
  • CFM @ 0.875-In. SP 3753
  • CFM @ 1.000-In. SP 3575
  • CFM @ 1.250-In. SP 3178
  • CFM @ 1.500-In. SP 2499
  • Sones @ 0.125-In. SP @ 5 Ft. 18.4
  • Sones @ 0.250-In. SP @ 5 Ft. 17.8
  • Sones @ 0.500-In. SP @ 5 Ft. 17.1
  • Motor Voltage 115/230
  • Phase 1
  • Hz 60
  • Max. Operating Amps 12.8/6.4
  • Motor HP 1
  • Max. BHP 1.10
  • RPM 1185
  • Base Width 30"
  • Base Length 30"
  • 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
  • Mounting Location Roof
  • 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
  • Recommended 12 In. Fixed Curb Item No. 2RB79
  • Recommended 8 In. Fixed Curb Item No. 4HX41
  • Agency Compliance UL/cUL 705
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Compliance and Restrictions



Dayton ventilators are designed for continuous operation to exhaust general clean, foul air and odors. Typically used for average length and/or average resistance duct work. Weather resistant ventilators feature housings constructed with a rigid internal support structure, spun aluminum curb cap, a birdscreen and a steel drive frame. All ventilators are UL/cUL listed Standard 705. Motors are mounted out of the discharge stream in a positively cooled chamber fed by outside air drawn in under the motor cover.

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Repair Parts

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  • 3GY70G

Alternate Products

Rated 4 out of 5 by 1reviewer.
Rated 4 out of 5 by it was a nice unit it was a nicely built unit that was easy to install March 23, 2012
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