740LL/405LL 3SMTCP K4 LIDO ENT

For keyed exterior doors. Both sides lock or unlock by key outside or turnbutton inside. Maximum Security locksets feature 2x strength full 1" throwbolt maximum security strike, and free-spinning guard. DOOR PREP: 2-1/8" Cross Bore, 1" Edge Bore, 1" x 2-1/4" Latch Face. BACKSET: adjustable to 2-3/8" or 2-3/4". DOOR THICKNESS: 1-3/8" to 1-3/4". CYLINDER: 5-pin. FACEPLATE: 1" x 2-1/4" round corner. STRIKES: 2-1/4" full lip round corner. BOLT: 1/2" throw. HANDING: Specify left or right handing. ANSI/BHMA: A156.2 Grade 2. Locksets with "SmartKey" (denoted SMT) feature allows, in 3 steps, locks to be re-keyed to a spare set of keys. When the spare keys are done being used, the lock can be re-keyed back to the original set of keys; can continually be re-keyed.