Kwikset 405BL 15 SMT RCAL RCS Balboa Entry Lever with SmartKey (SMT) Kwikset Grade 3 Balboa Keyed Entry Lever Keyed Entrance Lever, Satin Nickel Finish, with SmartKey (SMT) Backset: Adjustable 2-3/8" or 2-3/4" Door Thickness: 1-3/8" - 1-3/4"; Bolt: 1/2" Throw Faceplate: 1" x 2-1/4" Round Corner; Strike: 2-1/4" Full Lip Round Strike