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Dayton Centrifugal Downblast Roof Exhaust Fan - Clean Air Direct-Drive Fans
DaytonClean Air Direct-Drive Fans

Dayton Centrifugal Downblast Roof Exhaust Fan

The Dayton Centrifugal Downblast Roof Exhaust Fan (SKU 3G-OTH-79341) is a direct-drive, assembled clean air fan with a square base and a 13 3/4-inch wheel. It features a 3/4 hp, 208-230V AC, variable-speed…

SKU 3G-OTH-79341

Brand
Dayton
Item
Centrifugal Downblast Roof Exhaust Fan
Category
Clean Air Direct-Drive Fans
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Dayton
Type
Includes Drive Pack, 3/4 hp
Wheel
13 3/4 in
Assembly
Assembled
Base Shape
Square
Motor Type
Electronically Commutated
Drive Package
Includes Drive Package
Motor Enclosure
Open Dripproof
Motor Efficiency
High-Efficiency Motors
Number of Speeds
Variable
Mounting Location
Roof
Nameplate Voltage
208-230V AC
High-Efficiency Motor
Yes
Exhaust Airflow @ 0.000 in SP - Range
0 to 1,999 cfm
Exhaust Airflow @ 0.500 in SP - Range
2,000 to 4,999 cfm
For High-Static Pressure Applications
No

Technical Documents

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Dayton Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Dayton Centrifugal Downblast Roof Exhaust Fan (SKU 3G-OTH-79341) is a direct-drive, assembled clean air fan with a square base and a 13 3/4-inch wheel. It features a 3/4 hp, 208-230V AC, variable-speed, electronically commutated, open dripproof, high-efficiency motor. The fan delivers exhaust airflow from 0 to 1,999 cfm at 0.000 in SP and 2,000 to 4,999 cfm at 0.500 in SP, and is not designed for high-static-pressure applications.

Frequently Asked Questions

What is the Dayton centrifugal downblast roof exhaust fan used for?

The Dayton is a direct-drive roof exhaust fan designed for clean air ventilation in commercial or industrial buildings. It removes stale air, heat, or fumes from roof-mounted applications where moderate airflow (up to 4,999 cfm) is needed, but not for high-static-pressure duct systems.

What are the specifications of the Dayton roof exhaust fan?

The Dayton has a 13 3/4-inch wheel, a 3/4 hp electronically commutated motor, 208-230V AC, variable speed, and open dripproof enclosure. It delivers 0 to 1,999 cfm at 0.000 in SP and 2,000 to 4,999 cfm at 0.500 in SP. It is assembled with a square base and includes a drive package.

Where to buy the Dayton exhaust fan worldwide?

You can source the Dayton through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time; we provide competitive sourcing for this Dayton clean air fan.

How to install a Dayton direct-drive roof exhaust fan?

Install the Dayton on a roof curb or square base, ensuring structural support. Connect 208-230V AC power to the variable-speed motor controller. Secure the fan housing and verify free rotation of the wheel. Follow local electrical codes and use a licensed electrician for wiring.

Used in

Common applications for Dayton
HVAC ventilation — DAYTON centrifugal upblast roof exhaust fans (SKU 7M7U3) for kitchen exhaust systems
Mechanical power transmission — DAYTON HTD timing pulleys (SKU 404GV0) for conveyor belt drives
Process water handling — DAYTON self-priming centrifugal pumps (SKU 2ZXT4) for dewatering or transfer
Roofing and building services — DAYTON fixed ventilated roof curbs (SKU 4HX59) for filtered supply fan installations
Material handling — DAYTON latch assemblies (SKU 2KEN4) for electric chain hoist hook safety
Industrial air movement — DAYTON downblast roof exhaust fans (SKU 3HFL9) for clean air exhaust in manufacturing plants

Dayton Products

3G Electric supplies Dayton clean air direct-drive fans. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This assembled direct-drive fan is designed for roof-mounted exhaust in low-static-pressure ventilation systems. It features an 18 1/2 in wheel, a 1 hp electronically commutated motor with variable speeds, and an open dripproof enclosure. The unit delivers 2,000 to 4,999 cfm at 0.000 in SP and 0.500 in SP, and includes a drive package
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Assembled direct-drive fan with a square base and 13 3/4 in wheel. Includes drive package; 1/6 hp standard-efficiency motor with open air over enclosure. Single-speed operation at 115V AC. Designed for roof-mounted exhaust of clean air in general ventilation applications, delivering up to 1,999 cfm at 0.000 in SP and 0.500 in SP. Not for high-static-pressure uses
This direct-drive centrifugal fan is assembled with a square base and includes a drive package. It features a 13 3/4 in wheel and a 1/2 hp open air over motor, operating on 115V AC at a single speed. Designed for roof mounting, it delivers exhaust airflow in the 2,000 to 4,999 cfm range at 0.000 in SP and 0.500 in SP, suitable for clean air ventilation applications
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This direct-drive centrifugal fan is assembled with a square base and includes a drive package. It features a 13 3/4 in wheel and a 1/2 hp open air over motor, operating on 115V AC at a single speed. Designed for roof mounting, it delivers exhaust airflow in the 2,000 to 4,999 cfm range at 0.000 in SP and 0.500 in SP, suitable for clean air ventilation applications

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This direct-drive clean air fan is assembled with a square base and includes a drive package. It features an 8-inch wheel, shaded-pole motor, and three-speed operation at 115V AC. Designed for roof mounting, it delivers exhaust airflow up to 495 cfm and is suitable for general ventilation in commercial or industrial buildings
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