1 hr (1, 1-1/4, 1/2) 50,000 operational cycles with or without glass light features. 2 mm steel or stainless steel door frame 1.5 mm steel door leaf. hardware: 41/2” x 4” (4mm) full mortise hinges, galvanized or stainless steel including bearings. lock: UL fitted YALE or LCN with or without a delayed panic device. leaf width fitted YALE door closer. core material: rock wool filled.