Grade 3 or Grade 4 Security Door System 2" (50 mm) Thick Extra Heavy Duty Construction 14 gage Face Sheets, Optional 12 gage Vertically Steel-Stiffened Construction Continuously Welded Edges Heavy Gage Reinforcements for Security or Detention Hardware UL Rated Meets ANSI, NAAMM, HMMA 863-98 standards for Commercial Security Products Frames 14 gage Steel, 12 gage Optional Welded, Invisible Corners Welded-in Wall Anchors UL Rated
