A COMPLETE ORDER MEANS NO RECUTTING ON SITE

Ductwork Specifications and Fitting Guides for Contractors

What a Duct Order Needs Besides the Sizes

You have the measurements. What else does the order need?

A fitting can match every size on your sketch and still arrive with the wrong bend or the wrong joint. These guides cover the choices that go on the order with the sizes, and which ductwork you can price online.

Get the details right before the order, not on site.

8 min read

Start Here With How to Specify a Duct Fitting Once You Have the Measurements →

Two fittings with the same sizes can still be built very differently. The guide walks through the elbow shape, the joint at each end, transitions, takeoffs, pressure class, sealing, and what goes inside, with a checklist to send with your order.

More Ductwork Choices to Make Before You Order

Most packages raise four more questions before they're ordered. Will a stock fitting do, can it be priced online, what gauge and pressure class does it need, and should it be lined?

Got an order ready? Send the drawing or your sketch and we'll check what's missing before anything gets cut. Standard ductwork and fittings price instantly on WebDuct once your company has an account.

Still taking the sizes? Field Measure, Fit and Installation walks through measuring a run, while Choosing Materials and Finishes helps you pick the metal. Every other decision before an order lives in the Spec Room.

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⚠️Disclaimer!

At Duct Duct Goose, we specialize in sheet metal fabrication and stainless steel services for commercial and industrial applications, including HVAC systems, ducts, and custom metalwork. Please note that we do not offer services for automotive-related projects, such as vehicle parts, repairs, or modifications.