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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-81421) is a flammable vapor belt-drive fan with drive, featuring an 18 1/2 in wheel and 2,839 cfm exhaust airflow. It is unassembled, includes a drive…

SKU 3G-OTH-81421

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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Technical specs
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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, 2,839 cfm
Wheel
18 1/2 in
Assembly
Unassembled
Base Shape
Square
Drive Package
Includes Drive Package
Motor Enclosure
Totally Enclosed Nonventilated
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
Exhaust Airflow @ 0.500 in SP - Range
0 to 1,999 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-81421) is a flammable vapor belt-drive fan with drive, featuring an 18 1/2 in wheel and 2,839 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 standard-efficiency, totally enclosed nonventilated motor at 115/208-230V AC, single speed, and is not for high-static-pressure applications.

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 2,839 cfm of air and is suitable for industrial environments where flammable vapors or combustible dusts may be present.

What are the specifications of the Dayton roof exhaust fan?

The Dayton has an 18 1/2 in wheel, delivers 2,839 cfm, and includes a drive package. It operates on 115/208-230V AC single-phase power with a totally enclosed nonventilated motor. The fan is unassembled, mounts on a square roof base, and is rated for Class I Groups C & D and Class II Groups E & F hazardous locations.

Where to buy the Dayton roof 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 availability and a quote tailored to your location and project requirements.

How to install the Dayton flammable vapor fan?

Installation of the Dayton should follow the manufacturer's manual and local electrical codes. Since the fan is unassembled, mount the square base securely on the roof, connect the totally enclosed nonventilated motor to the specified 115/208-230V AC supply, and verify the drive package alignment. Always ensure the hazardous location rating matches your environment.

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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