Simplex 8100 SeriesProvides exterior access by combination, while allowing free egress.Construction: Cast front housing; unified trim plate; fixed ADA?compliant leversNumeric Keypad: Vandal resistant, solid metal pushbuttonsBackset: 2?" (70 mm)Latch: ?" (19 mm) two-piece anti-friction latch; 1" (25 mm) optional deadboltMinimum Stile Recommended: 5" (127 mm)Strike: 4?" (124 mm) L x 1?" (32 mm) W x ?" (6 mm) D Deadbolt/Latch mortise strike plateKey OverrideInterchangeable Cores: Small format?Best and equivalents (6 or 7-pin length); core not includedRemovable Cores: Large format?Medeco/ASSA/Yale/Abloy (5 or 6-pin length), Corbin Russwin, Schlage, and Sargent; core not includedDoor Preparation: Easily installs on wood or metal doors. Standard (86) mortise preparationDoor Thickness: 1?" (44 mm) to 2?" (57 mm)Accessibility Standard: Americans with Disabilities Act (ADA); fixed ADA-compliant leversDurability: Weather resistantFire Rating: 3-hour UL/ULC fire rating for "A" labeled doors