Special doors are commercial doors built to do more than open and close. Each one meets a tested standard for a certain risk. Fire-rated doors hold back fire and smoke for 20 minutes up to 3 hours. Bullet-resistant doors are tested to UL 752 levels. Lead-lined doors block x-ray radiation in imaging rooms. Acoustic doors reduce noise, measured by STC rating. Blast-resistant doors shield people from shock waves. We help you pick the right door, frame, and hardware for each opening, so it meets code.
A special door only works if the whole assembly is right. The door, frame, hinges, closer, and lock must all match the rating. One wrong part can void a fire label or weaken a ballistic opening. Our team installs and services complete assemblies for hospitals, schools, government sites, hotels, and offices in Maryland, DC, and Northern Virginia. We follow NFPA 80 and the maker’s specs on every job, so your doors protect people when it counts.
Every special door has its own rules. A lead-lined door needs shielding in the frame too. A fire door needs a closer and positive latching. An acoustic door needs tight seals all around. A bullet-resistant door needs hinges strong enough for its weight. Browse our special door types below to learn how each one works, where it belongs, and how we install it.
Acoustic door repair & replacement, seal restoration to STC-rated units, across Maryland, Washington DC & Northern Virginia. King Locksmith And Doors Inc.
Clean room door repair & installation from King Locksmith And Doors Inc.: hermetic sliders and airlock interlocks across Maryland, DC & Northern Virginia.
Cold storage door repair & replacement across Maryland, Washington DC & Northern Virginia: walk-in cooler & freezer doors, by King Locksmith And Doors Inc.
Egress door repair & installation across Maryland, Washington DC & Northern Virginia: panic hardware and fire exit doors by King Locksmith And Doors Inc.
Fire-rated door repair & replacement in Maryland, Washington DC & Northern Virginia: hollow metal fire doors, fire exit doors. King Locksmith And Doors Inc.
Heavy duty door repair & installation in Maryland, Washington DC & Northern Virginia. Blast and bullet resistant doors by King Locksmith And Doors Inc.
King Locksmith And Doors Inc. repairs and installs traffic impact doors, double action and warehouse doors across Maryland, DC & Northern Virginia.
King Locksmith And Doors Inc. repairs & installs lead lined doors across Maryland, Washington DC & Northern Virginia, from X-ray doors to lead lined frames.
Radiation door repair & installation in Maryland, Washington DC & Northern Virginia: lead lined doors and x-ray room doors by King Locksmith And Doors Inc.
No. A fire-rated door needs listed hardware that matches its label. That includes a closer, positive latching, and approved hinges. Adding the wrong lock, drilling new holes, or removing the closer can void the rating. NFPA 80 also calls for a yearly inspection of fire door assemblies. We install compliant hardware and help you stay ready for inspection.
Lead-lined doors protect people from radiation. You will find them in x-ray, CT, dental, and other imaging rooms in hospitals and clinics. They are also used in labs and some defense sites. The frame and hardware cutouts must be shielded too, so there are no gaps where radiation can leak through.
Most bullet-resistant doors are tested to UL 752, which has levels 1 through 10. Higher levels stop more powerful rounds. Some doors are also rated to NIJ 0108.01. The right level depends on your risk. Banks, courthouses, government offices, and schools often use these doors. We can help you match the level to your site.
Want to learn more? Explore our door hardware guides below. Each one explains how the hardware works, where it fits best, and how it supports your special doors.
