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Dayton Roof Curb: Fixed Ventilated Curbs, Square Curb, 25 x 25 in Inside Dim - Roof Curbs
DaytonRoof Curbs

Dayton Roof Curb: Fixed Ventilated Curbs, Square Curb, 25 x 25 in Inside Dim

The Dayton Roof Curb is a fixed ventilated curb designed for downblast fans, constructed from galvanized steel and compliant with UL 705 standards. It features a square configuration with an inside width of 25 in and…

SKU 3G-OTH-79383

Brand
Dayton
Item
Roof Curb: Fixed Ventilated Curbs, Square Curb, 25 x 25 in Inside Dim
Category
Roof Curbs
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Technical Specifications

Dayton
Manufacturer Part Number
4HX57
Type
Square Curb, Mfr Part # 4HX57
Material
Steel
Finish
Galvanized
Standards
UL 705
Inside Dim
25 x 25 in
For Fan Type
Downblast Fans
Curb Inside Width
25 in
Curb Outside Width
28-1/2 in
View Full Spec Sheet

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

Product Description

The Dayton Roof Curb is a fixed ventilated curb designed for downblast fans, constructed from galvanized steel and compliant with UL 705 standards. It features a square configuration with an inside width of 25 in and an outside width of 28-1/2 in, as specified by the manufacturer part number 4HX57.

Frequently Asked Questions

What is the Dayton Roof Curb 4HX57 used for?

The Dayton Roof Curb 4HX57 is a fixed ventilated curb designed to mount downblast fans on commercial or industrial roofs. It provides a stable, weatherproof base that channels airflow while supporting the fan. Common applications include HVAC systems in factories, warehouses, and commercial buildings where reliable roof penetration and ventilation are required.

What are the specifications of the Dayton Roof Curb 4HX57?

The Dayton Roof Curb 4HX57 is a square curb with an inside dimension of 25 x 25 in and an outside width of 28-1/2 in. It is made of galvanized steel and complies with UL 705 standards. This model is specifically designed for downblast fans and carries the manufacturer part number 4HX57.

Where to buy the Dayton Roof Curb 4HX57 worldwide?

You can source the Dayton Roof Curb 4HX57 through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive sourcing for Dayton roof curbs and related HVAC components.

How to install the Dayton Roof Curb 4HX57?

Install the Dayton Roof Curb 4HX57 by first ensuring the roof opening matches the curb's inside dimension of 25 x 25 in. Secure the curb to the roof structure using appropriate fasteners and seal all joints with roofing-grade sealant. Mount the downblast fan onto the curb per the fan manufacturer's instructions. Always follow local building codes and UL 705 guidelines.

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

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