We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

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-81655) is a belt-drive flammable vapor fan with a 30 1/2 in wheel, rated for 6,803 cfm and exhaust airflow of 5,000 to 10,000 cfm at 0.000 in SP. It…

SKU 3G-OTH-81655

Brand
Dayton
Item
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack
Category
Flammable Vapor 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

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Dayton
Type
Includes Drive Pack, 6,803 cfm
Wheel
30 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
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 (SKU 3G-OTH-81655) is a belt-drive flammable vapor fan with a 30 1/2 in wheel, rated for 6,803 cfm and exhaust airflow of 5,000 to 10,000 cfm at 0.000 in SP. It operates on 115/208-230V AC with a single-speed, standard-efficiency, totally enclosed fan-cooled motor. This unassembled unit includes a drive package and is rated for hazardous locations: Class I Groups C & D and Class II Groups E & F.

Frequently Asked Questions

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

The DAYTON Centrifugal Downblast Roof Exhaust Fan is designed for hazardous locations such as chemical plants or paint booths where flammable vapors may be present. It exhausts air at 6,803 cfm and is rated for Class I Groups C & D and Class II Groups E & F environments.

What are the specifications of the DAYTON roof exhaust fan?

The DAYTON is a belt-drive downblast fan with a 30 1/2 in wheel, 6,803 cfm, and exhaust airflow range of 5,000 to 10,000 cfm at 0.000 in SP. It operates on 115/208-230V AC with a single-speed, totally enclosed fan-cooled motor. The unit is unassembled and includes a drive package.

Where to buy the DAYTON roof exhaust fan worldwide?

3G Electric supplies the DAYTON roof exhaust fan worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this fan to any international location.

How to install the DAYTON belt-drive roof exhaust fan?

Install the DAYTON fan on a roof curb with a square base, ensuring proper sealing against weather. Since the unit is unassembled, follow the included drive package instructions for belt tension and pulley alignment. Always verify hazardous location compliance per Class I Groups C & D and Class II Groups E & F before 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 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 8,585 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 8,585 cfm
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 7,694 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 7,694 cfm
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 9,719 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 30 1/2 in Wheel, 9,719 cfm
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 4,223 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 4,223 cfm
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 4,637 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 24 1/2 in Wheel, 4,637 cfm
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

More from Dayton

View all Dayton parts
DAYTON Tubeaxial Fan: Flammable Vapor, 42 in Blade, 25,320 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
Dayton
DAYTON Tubeaxial Fan: Flammable Vapor, 42 in Blade, 25,320 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
DAYTON Tubeaxial Fan: Flammable Vapor, 60 in Blade, 50,567 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
Dayton
DAYTON Tubeaxial Fan: Flammable Vapor, 60 in Blade, 50,567 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
DAYTON Tubeaxial Fan: Flammable Vapor, 12 in Blade, 1,904 cfm @ 0.000 in SP, 208-230/460V AC, 1/2 hp
Dayton
DAYTON Tubeaxial Fan: Flammable Vapor, 12 in Blade, 1,904 cfm @ 0.000 in SP, 208-230/460V AC, 1/2 hp
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 11 in Wheel, 1,526 cfm, 3
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 11 in Wheel, 1,526 cfm, 3
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 18 1/2 in Wheel, 2,839 cfm
Dayton
Centrifugal Downblast Roof Exhaust Fan: Belt Drive, Includes Drive Pack, 18 1/2 in Wheel, 2,839 cfm
DAYTON Tubeaxial Fan: Flammable Vapor, 24 in Blade, 10,310 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
Dayton
DAYTON Tubeaxial Fan: Flammable Vapor, 24 in Blade, 10,310 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
DAYTON Tubeaxial Fan: Flammable Vapor, 60 in Blade, 45,933 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
Dayton
DAYTON Tubeaxial Fan: Flammable Vapor, 60 in Blade, 45,933 cfm @ 0.000 in SP, 230/460V AC, 3 Phase
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