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

3G Electric
Dayton Square Roof Curb - Roof Curbs
DaytonRoof Curbs

Dayton Square Roof Curb

<p>This Dayton square roof curb (model 5EFJ2) is a robust galvanized steel curb designed for upblast fans with a 17-inch square base. It features a 12.5 x 12.5-inch inside dimension and a 15.5-inch outside width…

SKU 3G-OTH-78818

Brand
Dayton
Item
Square Roof Curb
Category
Roof Curbs
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
Material
Steel
Finish
Galvanized
Includes
Damper Tray
Standards
UL 705
Inside Dim
12.5 x 12 1/2 in
For Fan Type
Upblast Fans
For Use With
17 in square base
Curb Inside Width
12-1/2 in
Curb Outside Width
15-1/2 in

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

<p>This Dayton square roof curb (model 5EFJ2) is a robust galvanized steel curb designed for upblast fans with a 17-inch square base. It features a 12.5 x 12.5-inch inside dimension and a 15.5-inch outside width, providing a secure and weather-resistant mounting base. The curb includes a damper tray and meets UL 705 standards, ensuring reliability for commercial and industrial ventilation systems.</p><p>Ideal for HVAC contractors and facility managers in Singapore, this curb is available with SGD quotes on request. We handle GST for local buyers and offer fast delivery across Singapore and Southeast Asia, making it a convenient choice for your project needs.</p>

Frequently Asked Questions

What are the inside and outside dimensions of this curb?

The inside dimension is 12.5 x 12.5 inches, and the outside width is 15.5 inches.

Is this curb compatible with upblast fans?

Yes, it is specifically designed for upblast fans with a 17-inch square base.

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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from Dayton

View all Dayton parts
Fixed nonventilated roof curb for mounting filtered supply fans with 24-1/2 in square base. Constructed of galvanized steel with inside dimensions 20 x 20 in and outside dimensions 23 x 23 in. Includes damper tray. Complies with UL 705
Dayton
Fixed nonventilated roof curb for mounting filtered supply fans with 24-1/2 in square base. Constructed of galvanized steel with inside dimensions 20 x 20 in and outside dimensions 23 x 23 in. Includes damper tray. Complies with UL 705
Roof Curb: Fixed Nonventilated Curbs, Square Curb, 35.5 x 35 1/2 in Inside Dim, Mfr Part #
Dayton
Roof Curb: Fixed Nonventilated Curbs, Square Curb, 35.5 x 35 1/2 in Inside Dim, Mfr Part #
Fixed nonventilated square roof curb constructed from galvanized steel. Designed for upblast fans with a 28-1/2 in square base. Includes a damper tray. Inside dimensions 24 x 24 in, outside dimensions 27 x 27 in. UL 705 listed
Dayton
Fixed nonventilated square roof curb constructed from galvanized steel. Designed for upblast fans with a 28-1/2 in square base. Includes a damper tray. Inside dimensions 24 x 24 in, outside dimensions 27 x 27 in. UL 705 listed
Roof Curb: Fixed Nonventilated Curbs, Square Curb, 34.5 x 34 1/2 in Inside Dim, Mfr Part #
Dayton
Roof Curb: Fixed Nonventilated Curbs, Square Curb, 34.5 x 34 1/2 in Inside Dim, Mfr Part #
Fixed nonventilated square roof curb made of galvanized steel. Inside dimensions 46 x 46 in, outside dimensions 49 x 49 in. Designed for mounting filtered supply fans with a 50-1/2 in square base. Complies with UL 705 standards
Dayton
Fixed nonventilated square roof curb made of galvanized steel. Inside dimensions 46 x 46 in, outside dimensions 49 x 49 in. Designed for mounting filtered supply fans with a 50-1/2 in square base. Complies with UL 705 standards

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first