Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Dayton Clean Air Belt-Drive Fan with Drive, 30 1/2 in Wheel, 9,719 cfm - Clean Air Belt-Drive Fans with Drive
DaytonClean Air Belt-Drive Fans with Drive

Dayton Clean Air Belt-Drive Fan with Drive, 30 1/2 in Wheel, 9,719 cfm

The Dayton Centrifugal Downblast Roof Exhaust Fan is a belt-drive clean air fan (SKU 3G-OTH-79771) with a 30 1/2 in wheel and an included drive package. It delivers 9,719 cfm at 0.000 in SP and 5,000 to 10,000 cfm at…

SKU 3G-OTH-79771

Brand
Dayton
Item
Clean Air Belt-Drive Fan with Drive, 30 1/2 in Wheel, 9,719 cfm
Category
Clean Air Belt-Drive Fans with Drive
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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, 9,719 cfm
Wheel
30 1/2 in
Assembly
Unassembled
Base Shape
Square
Drive Package
Includes Drive Package
Motor Enclosure
Open Dripproof
Motor Efficiency
Standard-Efficiency Motors
Number of Speeds
1
Mounting Location
Roof
Nameplate Voltage
115/230V AC
High-Efficiency Motor
No
Exhaust Airflow @ 0.000 in SP - Range
5,000 to 10,000 cfm
Exhaust Airflow @ 0.500 in SP - Range
5,000 to 10,000 cfm
For High-Static Pressure Applications
No

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Dayton Centrifugal Downblast Roof Exhaust Fan is a belt-drive clean air fan (SKU 3G-OTH-79771) with a 30 1/2 in wheel and an included drive package. It delivers 9,719 cfm at 0.000 in SP and 5,000 to 10,000 cfm at 0.500 in SP, powered by a 115/230V AC open dripproof, standard-efficiency, single-speed motor. This unassembled, square-base unit is designed for roof mounting and is not for high-static-pressure applications.

Frequently Asked Questions

What is the Dayton Centrifugal Downblast Roof Exhaust Fan used for?

The Dayton Centrifugal Downblast Roof Exhaust Fan is used for general clean-air ventilation in commercial and industrial buildings. It is mounted on the roof to exhaust stale air, fumes, or heat from the facility. This belt-drive model is suitable for low-static-pressure applications and is not designed for high-static-pressure systems.

What are the specifications of the Dayton roof exhaust fan?

The Dayton features a 30 1/2 in wheel and delivers 9,719 cfm at 0.000 in SP, with a range of 5,000 to 10,000 cfm at 0.500 in SP. It includes a drive package, has an open dripproof motor enclosure, operates on 115/230V AC, and is a single-speed, standard-efficiency, belt-drive unit. The fan is unassembled with a square base for roof mounting.

Where to buy the Dayton roof exhaust fan worldwide?

You can source the Dayton roof exhaust fan through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this Dayton belt-drive fan.

How to install the Dayton downblast roof exhaust fan?

Install the Dayton downblast roof exhaust fan on a structurally sound roof curb or support frame. Since it ships unassembled, follow the manufacturer's instructions to mount the motor, drive package, and wheel. Ensure proper electrical connection to the 115/230V AC supply and verify belt tension. Use a licensed electrician and follow local building codes for safe operation.

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 belt-drive fans with drive. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in commercial or industrial buildings. Includes drive package, 30 1/2 in wheel, delivers 7,694 cfm. Open dripproof, standard-efficiency motor, 115/230V AC, single speed. Unassembled; not for high-static pressure applications
Dayton
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in commercial or industrial buildings. Includes drive package, 30 1/2 in wheel, delivers 7,694 cfm. Open dripproof, standard-efficiency motor, 115/230V AC, single speed. Unassembled; not for high-static pressure applications
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in commercial or industrial buildings. Includes drive package, 30 1/2 in wheel, delivers 6,803 cfm with exhaust airflow range of 5,000 to 10,000 cfm at 0.000 in SP. Operates on 115/208-230V AC, single-speed, standard-efficiency, open dripproof motor. Unassembled unit with square base, not for high-static-pressure applications
Dayton
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in commercial or industrial buildings. Includes drive package, 30 1/2 in wheel, delivers 6,803 cfm with exhaust airflow range of 5,000 to 10,000 cfm at 0.000 in SP. Operates on 115/208-230V AC, single-speed, standard-efficiency, open dripproof motor. Unassembled unit with square base, not for high-static-pressure applications
Belt-drive centrifugal downblast roof exhaust fan for clean-air ventilation. Includes drive package, 30 1/2 in wheel, 8,585 cfm capacity. Single-speed, standard-efficiency, open dripproof motor, 115/208-230V AC. Unassembled with square base for roof mounting
Dayton
Belt-drive centrifugal downblast roof exhaust fan for clean-air ventilation. Includes drive package, 30 1/2 in wheel, 8,585 cfm capacity. Single-speed, standard-efficiency, open dripproof motor, 115/208-230V AC. Unassembled with square base for roof mounting
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in industrial and commercial buildings. Includes drive package; unassembled with square base. Wheel diameter 21 1/2 in, airflow 5,340 cfm. Open dripproof, standard-efficiency motor; 115/208-230V AC, single speed. Not for high-static-pressure applications
Dayton
Belt-drive centrifugal downblast roof exhaust fan for general ventilation in industrial and commercial buildings. Includes drive package; unassembled with square base. Wheel diameter 21 1/2 in, airflow 5,340 cfm. Open dripproof, standard-efficiency motor; 115/208-230V AC, single speed. Not for high-static-pressure applications
This belt-drive clean air fan includes a drive package and is designed for roof-mounted exhaust applications. It features a 50-inch wheel, delivers 17,245 cfm, and operates on 115/208-230V AC with a single-speed open dripproof motor. The unassembled unit has a square base and is intended for general ventilation, heat removal, or fume extraction in large spaces
Dayton
This belt-drive clean air fan includes a drive package and is designed for roof-mounted exhaust applications. It features a 50-inch wheel, delivers 17,245 cfm, and operates on 115/208-230V AC with a single-speed open dripproof motor. The unassembled unit has a square base and is intended for general ventilation, heat removal, or fume extraction in large spaces
Belt-drive clean-air fan for roof mounting, includes drive package. Features a 24 1/2 in wheel delivering 7,575 cfm at low static pressures. Operates on 115/230V AC with a standard-efficiency open-dripproof motor. Unassembled with square base, suitable for general ventilation exhausting heat, fumes, and odors
Dayton
Belt-drive clean-air fan for roof mounting, includes drive package. Features a 24 1/2 in wheel delivering 7,575 cfm at low static pressures. Operates on 115/230V AC with a standard-efficiency open-dripproof motor. Unassembled with square base, suitable for general ventilation exhausting heat, fumes, and odors

More from Dayton

View all Dayton parts
Belt-drive roof exhaust fan for clean-air applications. Unassembled unit with square base, includes drive package. Open dripproof, standard-efficiency, single-speed motor rated 208-230/440V AC. Delivers 4,102 cfm with 18 1/2 in wheel
Dayton
Belt-drive roof exhaust fan for clean-air applications. Unassembled unit with square base, includes drive package. Open dripproof, standard-efficiency, single-speed motor rated 208-230/440V AC. Delivers 4,102 cfm with 18 1/2 in wheel
This belt-drive axial fan is designed for clean air ventilation applications such as exhausting smoke, heat, fumes, and stale air from commercial or industrial spaces. It features a 36-inch blade, delivers 17,455 cfm, and is powered by a 1 1/2 hp TEFC motor operating at 115/208-230V AC, single speed
Dayton
This belt-drive axial fan is designed for clean air ventilation applications such as exhausting smoke, heat, fumes, and stale air from commercial or industrial spaces. It features a 36-inch blade, delivers 17,455 cfm, and is powered by a 1 1/2 hp TEFC motor operating at 115/208-230V AC, single speed
Belt-drive centrifugal roof exhaust fan with included drive package. Features a 14-3/4 in wheel, delivers 3163 cfm at low static pressure, and operates on 115/230V AC with a standard-efficiency open dripproof motor. Unassembled unit with square base for roof mounting. Suitable for general ventilation in industrial or commercial buildings where high-static-pressure resistance is not required
Dayton
Belt-drive centrifugal roof exhaust fan with included drive package. Features a 14-3/4 in wheel, delivers 3163 cfm at low static pressure, and operates on 115/230V AC with a standard-efficiency open dripproof motor. Unassembled unit with square base for roof mounting. Suitable for general ventilation in industrial or commercial buildings where high-static-pressure resistance is not required
Unassembled belt-drive fan with 42-inch blade delivering 25,320 cfm at 0.000 in static pressure. Powered by a 230V AC single-phase capacitor-start capacitor-run motor with totally enclosed fan-cooled enclosure. Includes drive package, designed for vertical mounting, and features spark-resistant construction type B. Suitable for clean air movement in industrial ventilation, drying, or cooling systems
Dayton
Unassembled belt-drive fan with 42-inch blade delivering 25,320 cfm at 0.000 in static pressure. Powered by a 230V AC single-phase capacitor-start capacitor-run motor with totally enclosed fan-cooled enclosure. Includes drive package, designed for vertical mounting, and features spark-resistant construction type B. Suitable for clean air movement in industrial ventilation, drying, or cooling systems
Belt-drive axial upblast roof exhaust fan for clean-air applications. Removes heat, fumes, and odors from industrial and commercial facilities by exhausting air vertically upward. Features a 42-inch blade, 23,987 cfm airflow, and a 2 hp ODP motor. Operates at single speed on 115/208-230V AC power
Dayton
Belt-drive axial upblast roof exhaust fan for clean-air applications. Removes heat, fumes, and odors from industrial and commercial facilities by exhausting air vertically upward. Features a 42-inch blade, 23,987 cfm airflow, and a 2 hp ODP motor. Operates at single speed on 115/208-230V AC power
Belt-drive centrifugal downblast roof exhaust fan, unassembled with square base. Includes drive package. Features a 14 3/4 in wheel and delivers 3,163 cfm. Equipped with an open dripproof, standard-efficiency, single-speed motor rated 208-230/440V AC. Suitable for general ventilation exhausting heat, odors, or fumes from industrial or commercial buildings
Dayton
Belt-drive centrifugal downblast roof exhaust fan, unassembled with square base. Includes drive package. Features a 14 3/4 in wheel and delivers 3,163 cfm. Equipped with an open dripproof, standard-efficiency, single-speed motor rated 208-230/440V AC. Suitable for general ventilation exhausting heat, odors, or fumes from industrial or commercial buildings
Unassembled belt-drive fan for clean-air ventilation. Includes drive package. 12-inch blade delivers 1904 cfm at 0.000 in static pressure. Single-phase capacitor-start motor, 115/208-230V AC, totally enclosed fan-cooled. Type B spark-resistant construction. Horizontal mounting orientation
Dayton
Unassembled belt-drive fan for clean-air ventilation. Includes drive package. 12-inch blade delivers 1904 cfm at 0.000 in static pressure. Single-phase capacitor-start motor, 115/208-230V AC, totally enclosed fan-cooled. Type B spark-resistant construction. Horizontal mounting orientation
This belt-drive axial upblast roof exhaust fan features a 60-inch blade and delivers 58,455 cfm. It is powered by a single-speed 7 1/2 hp TEFC motor operating at 230V AC. Designed for clean air exhaust, it is commonly used in industrial and commercial roof-mounted ventilation systems
Dayton
This belt-drive axial upblast roof exhaust fan features a 60-inch blade and delivers 58,455 cfm. It is powered by a single-speed 7 1/2 hp TEFC motor operating at 230V AC. Designed for clean air exhaust, it is commonly used in industrial and commercial roof-mounted ventilation systems