The Difference is Quality at National Custom Hollow Metal and our product lines include TrustShield Lead-Lined doors to keep X-Ray technicians safe, ThermaHold Thermal Doors to prevent cold transfer from outside to the inside, and SoundSafe Sound Transmission Control (STC) Doors to maintain confidentiality and eliminate noise pollution in the workplace. And our DefendDoor line of stainless steel doors and frames has been our top-selling product from day one. Call us or email us whenever you’re ready for a same-day quote!

DefendDoor stainless steel doors are high-quality center-seamed box doors custom-built to order in your choice of 304 or 316 #4 finish. We can manufacture doors in any size up to 4′ 10 1/4 wide and 12’0” high and frames up to 10’0” wide and 12’0” high. The seam-welded edges and all reinforcement welds are ground and polished to maintain a smooth finish, and we also offer optional fully seam-welded vertical, or 3 or 4-sided box seam welded box doors suitable for food preparation and healthcare facilities. We can also help you meet most labeling requirements, including Underwriters’ Laboratories labeling and 20-minute, 45-minute, 90-minute, or three-hour Warnock-Hersey fire door labeling.

Stainless steel is beautiful and durable and outlasts both galvanneal steel and aluminum. It’s also rust-prohibitive and corrosion-resistant. Your doors will be thoroughly cleaned and finished at our factory, and will be carefully crated for damage-free delivery. Stainless steel doors never need to be painted, and the only thing you’ll ever have to do to keep them looking as good as the day they were delivered is occasionally wiping them down with soap and warm water!

We proudly offer old-school customer service from a knowledgeable staff, and all orders include free Quik Ship service. We also offer expedited shipping options, including Hot Rush and Walk Thru service, and we love helping our distributors keep their projects on time and within budget. Most importantly, you can always place your order with confidence because we stand behind all orders with a one-year warranty!

If you have any questions or would like a quote on custom-built DefendDoor box doors in two hours or less, contact us online or at 1-800-334-3070. Email us at [email protected].