Deadbolt thrown or retracted by key from either side. Provides Grade 1 security against hammer and crow bar prying, kick-ins, cylinder knock out attacks. 3″ screws with steel door frame reinforcer protect against violent forced entry attacks. Universal latch. Packaged with a 1″ square corner, 1/4″ round corner, and 1″ circular drive-in deadbolt, adjustable for 2-3/8″ or 2-3/4″ backsets. 1-1/8″ x 2-3/4″ x 1-1/16″ standard strike. Grade 2 construction for superior durability and quality performance. Lifetime mechanical warranty. 10 year finish warranty.