Skip Content


24-1/2", Assembled Downblast Ventilator, Belt-Drive

  • Item # 3GY68
  • My Part #
  • Mfr. Model # 3GY68
  • Catalog Page # 2959
  • UNSPSC # 40101502
24-1/2", Assembled Downblast Ventilator, Belt-Drive close

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.

CAD Downloads

Web Price $2,416.00 / each
Activate Now

to save with

Select AdvantageSM

This item requires special shipping, additional charges may apply.

Please sign in or register to access lists

Please sign in or register to access Quote

Want to Get Free Shipping?

Jump to:
  • Shipping Weight 161.0 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

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.

View More

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 208/230/460
  • Motor HP - Roof Ventilators 2
  • Base Square Size - Roof Ventilators 34" x 34"
  • Number of Speeds 1
  • Mounting Location - Roof Ventilators Roof
  • Wheel Dia. 24-1/2"
  • Item - Roof Ventilators Downblast Ventilator
  • CFM @ 0.000-In. SP 8355
  • CFM @ 0.125-In. SP 8135
  • CFM @ 0.250-In. SP 7916
  • CFM @ 0.375-In. SP 7700
  • CFM @ 0.500-In. SP 7467
  • CFM @ 0.625-In. SP 7215
  • CFM @ 0.750-In. SP 6933
  • CFM @ 0.875-In. SP 6616
  • CFM @ 1.000-In. SP 6240
  • CFM @ 1.250-In. SP 5388
  • CFM @ 1.500-In. SP 3707
  • Sones @ 0.125-In. SP @ 5 Ft. 23
  • Sones @ 0.250-In. SP @ 5 Ft. 21
  • Sones @ 0.500-In. SP @ 5 Ft. 21
  • Phase 3
  • Hz 60
  • Max. Operating Amps 6.2/3.1
  • Max. BHP 2.06
  • RPM 910
  • Base Height 1 3/4"
  • Overall Dia. 42-3/4"
  • Overall Height 38-3/8"
  • Shaft Dia. Wheel End 1"
  • 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. 2ZV84
  • Adj. 6 3/8"H Roof Curb Stock No. 4C455
  • Assembled/Unassembled Assembled
  • Recommended 12 In. Fixed Curb Item No. 2RB80
  • Recommended 8 In. Fixed Curb Item No. 4HX42
  • Agency Compliance AMCA Sound & Air, UL/cUL 705, CSA Certified Motor
  • Dimension A 34"
  • Dimension B 42-3/4"
  • Dimension C 38-3/8"
  • Dimension D 5-3/4"
How can we improve our Technical Specifications?

Compliance and Restrictions


Replacement Parts

Alternate Products

Alternate Products may not be identical in style or function to original selection. Please compare below for more information.

Alternate Search Terms

Related Products

Customer Reviews

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.