Serving New York, New Jersey & Connecticut Since 1949

Servicing New York, New Jersey and Connecticut Since 1949!

Testimonials

"A wonderful team. Did great work. I will be calling you in a few weeks to take care of the work I need done to my cellar door."

"A wonderful team. Did great work. I will be calling you in a few weeks to take care of the work I need done to my cellar door."

The Solution to All Your Fireproof Door and Window Needs

The Solution to All Your Fireproof Door and Window Needs

Capitol Fireproof Door manufactures and installs high quality fireproof doors and kalamein lot-line windows. We make our living exceeding the expectations of our customers.

Mercury Lock & Door Service is the professional answer for all your door installation and service needs.

Proudly serving all 5 boroughs of New York, Westchester, Long Island, New Jersey & Connecticut.

Kalamein Fireproof Door
We Manufacture and Install

We Manufacture and Install:

  • Kalamein Doors
  • Hollow Metal Doors
  • Solid and Fire-rated Wood Doors
  • Steel Welded & Knockdown Frames
  • Angle Iron Frames
  • Kalamein Frames
  • Kalamein Lot-Line Fire-Rated Windows
  • Door Hardware & Accessories
We Serve Large & Small Companies

We Serve Large & Small Customers

  • Apartment buildings
  • Office buildings
  • Nursing homes
  • Hospitals
  • Senior housing
  • Hotels
  • Schools
  • Churches
  • Private Residences
  • Contractors
We Manufacture and Install:

We Manufacture and Install:

  • Apartment Doors
  • Basement Doors
  • Restaurant Doors
  • Church Doors
  • Hotel Doors
  • Iron Works
  • Fire Exit Doors
  • Roof Doors
  • Building Entrance Doors
  • Elevator Motor Room Doors
  • Terrace Doors
  • Stairwell Doors
  • Boiler Room Doors
  • Lot-Line Windows
  • Hallway Doors
  • Compactor Room Doors
  • Tank Room Doors
  • Garbage Room Doors
  • Hospital Doors
  • Nursing Home Doors
  • Laundry Room Doors
  • Lobby Doors
  • Package Room Doors
  • Service Entrance Doors
  • Panic Exit Doors Side
  • Entrance Doors
  • Storage Room Doors
  • Basement Exit Doors