Duct2Go

Square to Round Transition | Galvanized, Aluminum, or Stainless Steel

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What it is

Description


Square to Round Transition

Achieve a seamless connection between rectangular and round duct systems with the Duct2Go Square to Round Transition. Built to precise SMACNA standards, this fitting maintains consistent airflow and minimizes pressure loss in your HVAC system. Perfect for both commercial and residential duct installations.

Key features

  • Precision formed — Engineered to deliver smooth, efficient airflow from rectangular to round duct sections.
  • SMACNA compliant — Fabricated in accordance with industry standards for proper fit, performance, and durability.
  • Durable materials — Available in galvanized steel, aluminum, or stainless options for various applications.
  • Custom sizing available — Transitions can be fabricated to match your exact dimensions and system layout.

Specifications

Material
Galvanized steel (standard), aluminum or stainless steel (optional)
Shape
Rectangular inlet to round outlet
Construction
Formed and welded per SMACNA standards
Application
HVAC systems, air handlers, exhaust, and return ducts
Custom sizes
Available upon request

Duct2Go Square to Round Transitions are proudly made in the USA and built to deliver a perfect fit, reliable airflow, and long-term performance in any duct system.

Do you require a custom size?

We fabricate transitions to your exact specifications. Submit your dimensions and our team will design and build it for you.

Start a Custom Design Request
What it is

Shipping & returns

Production time
Every fitting is made to order. Production typically takes 9-12 business days after payment.

Shipping
Shipping is calculated at checkout and paid by the customer.
Small orders that fit within carrier size limits ship by ground parcel.
Larger orders ship LTL freight on pallets.
Residential delivery, liftgate service, and limited-access locations may add accessorial charges.
All orders ship from Chandler, AZ.

Receiving freight
Inspect your shipment before signing. Note any visible damage on the delivery receipt or BOL, then contact us immediately. Always take photos of the damages.

Returns & cancellations
Because every fitting is built to your specifications, orders can’t be cancelled once production begins, and custom fittings aren’t returnable. If a fitting arrives with a fabrication error or doesn’t match your order specs, contact us within 24 hours and we’ll make it right.

Next step

We build custom ductwork

Submit your designs today, or talk it through with the shop. Either way you will have a price and a lead time you can put on a schedule.

Get a custom quote Submit drawings
Shop
3385 N Nevada St
Chandler, AZ 85225
Hours
Monday to Friday | 8:00AM to 4:00PM
Phone
(480) 452-8069
Email
contact@duct2go.com