Security Doors & Frames, Brand Name : Steel Tech

Doors are designed for maximum security in accordance with HMMA 862-87. Doors are supplied seamless with no visible seams on faces or vertical edges. Face sheets are totally supported by 2.0 mm thick steel vertical stiffeners placed no more than 150 mm apart and welded no more than 150 mm along their length Fiberglass or Rockwool insulates the area between stiffeners. The top and bottom door edges are closed by 3.0 mm inverted steel channel welded in place.