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Dayton Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack - Flammable Vapor Belt-Drive Fans with Drive
DaytonFlammable Vapor Belt-Drive Fans with Drive

Dayton Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack

The Dayton Centrifugal Downblast Roof Exhaust Fan (SKU 3G-OTH-81785) is a flammable vapor belt-drive fan with drive, featuring a 24 1/2 in wheel and 4,637 cfm exhaust airflow. It is unassembled, includes a drive…

SKU 3G-OTH-81785

Brand
Dayton
Item
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack
Category
Flammable Vapor Belt-Drive Fans with Drive
Available to Order
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Worldwide Shipping
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Dayton
Type
Includes Drive Pack, 4,637 cfm
Wheel
24 1/2 in
Assembly
Unassembled
Base Shape
Square
Drive Package
Includes Drive Package
Motor Enclosure
Totally Enclosed Fan Cooled
Motor Efficiency
Standard-Efficiency Motors
Number of Speeds
1
Mounting Location
Roof
Nameplate Voltage
115/208-230V AC
High-Efficiency Motor
No
Hazardous Location Rating
Class I Groups C & D, Class II Groups E & F
Hazardous Location Specification
Class I Group C, Class I Group D, Class II Group E, Class II Group F, Class II Group F
Exhaust Airflow @ 0.000 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-81785) is a flammable vapor belt-drive fan with drive, featuring a 24 1/2 in wheel and 4,637 cfm exhaust airflow. It is unassembled, includes a drive package, and is rated for hazardous locations: Class I Groups C & D, Class II Groups E & F. The fan operates with a totally enclosed fan-cooled motor at 115/208-230V AC, single speed, and is designed for roof mounting.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

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

The Dayton is a flammable vapor belt-drive roof exhaust fan designed for hazardous locations classified as Class I Groups C & D and Class II Groups E & F. It moves 4,637 cfm of air and is suitable for industrial environments requiring explosion-proof ventilation, such as chemical plants or paint booths.

What are the specifications of the Dayton roof exhaust fan?

The Dayton features a 24 1/2 in wheel, 4,637 cfm airflow, and a totally enclosed fan-cooled motor rated at 115/208-230V AC, single speed. It includes a drive package, is unassembled, and mounts on a square roof base. Hazardous location rating covers Class I Groups C & D and Class II Groups E & F.

Where to buy the Dayton exhaust fan worldwide?

3G Electric supplies the Dayton centrifugal downblast roof exhaust fan to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this flammable vapor belt-drive fan.

How to install the Dayton roof exhaust fan?

Install the Dayton on a structurally sound roof curb with proper flashing to prevent leaks. Since it is unassembled, follow the included drive package instructions for belt tension and alignment. Ensure electrical connections match the 115/208-230V AC motor and comply with hazardous location wiring codes.

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

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Compatible alternatives & equivalents

Cross-referenced by specification & description
This belt-drive centrifugal downblast roof exhaust fan is designed for hazardous locations rated Class I Groups C & D and Class II Groups E & F. It includes a drive package and features a 24 1/2 in wheel delivering 5,371 cfm. The unassembled fan has a square base and a totally enclosed fan cooled motor rated at 115/208-230V AC. Typical applications include ventilation of areas where flammable vapors or combustible dusts may be present
Dayton
This belt-drive centrifugal downblast roof exhaust fan is designed for hazardous locations rated Class I Groups C & D and Class II Groups E & F. It includes a drive package and features a 24 1/2 in wheel delivering 5,371 cfm. The unassembled fan has a square base and a totally enclosed fan cooled motor rated at 115/208-230V AC. Typical applications include ventilation of areas where flammable vapors or combustible dusts may be present
Belt-drive roof exhaust fan with 24 1/2 in wheel delivering 4,223 cfm. Includes drive pack; unassembled. Totally enclosed nonventilated motor, single-speed, 115/208-230V AC. Rated for hazardous locations Class I Groups C & D, Class II Groups E & F
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Belt-drive roof exhaust fan with 24 1/2 in wheel delivering 4,223 cfm. Includes drive pack; unassembled. Totally enclosed nonventilated motor, single-speed, 115/208-230V AC. Rated for hazardous locations Class I Groups C & D, Class II Groups E & F
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 5,371 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 5,371 cfm
Belt-drive downblast roof exhaust fan for hazardous locations. Rated Class I Groups C & D, Class II Groups E & F. Includes drive package, 30 1/2 in wheel, 6,803 cfm, 115/208-230V AC single-speed TEFC motor. Unassembled
Dayton
Belt-drive downblast roof exhaust fan for hazardous locations. Rated Class I Groups C & D, Class II Groups E & F. Includes drive package, 30 1/2 in wheel, 6,803 cfm, 115/208-230V AC single-speed TEFC motor. Unassembled
This belt-drive downblast roof exhaust fan is designed for hazardous locations rated Class I Groups C & D and Class II Groups E, F & G. It delivers 4,637 cfm with a 24 1/2-inch wheel and includes a drive package. The unassembled fan features a square base and a totally enclosed nonventilated standard-efficiency motor for 230/460V AC operation
Dayton
This belt-drive downblast roof exhaust fan is designed for hazardous locations rated Class I Groups C & D and Class II Groups E, F & G. It delivers 4,637 cfm with a 24 1/2-inch wheel and includes a drive package. The unassembled fan features a square base and a totally enclosed nonventilated standard-efficiency motor for 230/460V AC operation
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 6,060 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 6,060 cfm

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This unassembled belt-drive fan is designed for vertical mounting in hazardous locations. It features a 21-inch blade delivering 5,407 cfm at 0.000 in SP, powered by a 1 hp capacitor-start capacitor-run motor. Rated Class I Group C and D with spark-resistant construction type B, it is suitable for ventilating areas where flammable vapors may be present. Includes drive package; operates on 115/208-230V AC
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This flammable vapor belt-drive fan includes a drive package and is rated for hazardous locations Class I Groups C & D and Class II Groups E & F. It features a 30 1/2-inch wheel, delivers 9,719 cfm, and operates on 208-230V AC with a totally enclosed fan-cooled motor. The unassembled unit has a square base for roof mounting
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