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.

DC Duct Elbows


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.


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.

Have questions or want to check availability?  Contact us today!

Call us at 202-562-3828

We have sales representatives standing by Monday–Thursday, 8:30am–4:30pm and Friday 8:30am–4:00pm.

Send us an email

If it’s after hours or you just prefer to write your questions, send us an email.