DC Duct & Sheet Metal, LLC

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Our Story


We are sheet metal fabricators specializing in Spiral Duct, Oval Duct and Fittings that are manufactured to current SMACNA guidelines 3rd edition 2005. Our main office is located in Washington, DC, with our production facilities and warehouse in Mount Rainier, Maryland.


We service Maryland, Northern Virginia and the District of Columbia, as well as offering our products throughout the United States via common carrier. We will also offer local delivery at a nominal charge.

We welcome pick-ups. We’ll have your order ready and help you load it. If for some reason we don’t have what you’re looking for on the floor and are unable to supply you with enough materials to complete your order we will do whatever is necessary and possible to get you started.

We can deliver or ship to most anywhere. We are able to purchase some items cheaper than we can manufacture them onsite and we have made arrangements for overnight shipping.


Because we manufacture all of our spiral duct, oval duct, and fittings on-site in our warehouse, we are uniquely positioned to assist our customers with on-demand production.

Most suppliers fill orders in the order they are received with no extra attention paid to their customers specific needs. At DC Duct & Sheet Metal, we will put larger orders on hold; just briefly, to fabricate that one piece you need and get you on your way so that you can finish your job.

What We Do

Products and Services

Blue Book Network Classifications

We can be found under the following Blue Book Network Classifications.

CSI Codes

Company Information

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Diversity Classification

Minority Business Enterprise
Small Business Enterprise
Service-Disabled Veteran-Owned Small Business

Associations & Memberships

SMACNA (Sheet Metal & Air Conditioning Contractors National Assn.)
SPIDA (Spiral Duct Manufacturers Assn.)

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