Simplex 8100 Series Provides exterior access by combination, while allowing free egress. Construction: Cast front housing; unified trim plate; fixed ADA—compliant levers Numeric Keypad: Vandal resistant, solid metal pushbuttons Backset: 2¾" (70 mm) Latch: ¾" (19 mm) two-piece anti-friction latch; 1" (25 mm) optional deadbolt Minimum Stile Recommended: 5" (127 mm) Strike: 4⅞" (124 mm) L x 1¼" (32 mm) W x ¼" (6 mm) D Deadbolt/Latch mortise strike plate Key Override Interchangeable Cores: Small format—Best and equivalents (6 or 7-pin length); core not included Removable Cores: Large format—Medeco/ASSA/Yale/Abloy (5 or 6-pin length), Corbin Russwin, Schlage, and Sargent; core not included Door Preparation: Easily installs on wood or metal doors. Standard (86) mortise preparation Door Thickness: 1¾" (44 mm) to 2¼" (57 mm) Accessibility Standard: Americans with Disabilities Act (ADA); fixed ADA-compliant levers Durability: Weather resistant Fire Rating: 3-hour UL/ULC fire rating for "A" labeled doors