The Traditionale Collection by Weslock is not to be outdone in style or quality. You can feel comfortable knowing that the high quality of Weslock means this beautiful look will be around for many years. Features: Left or right handing Simple and quick installation will have your home looking beautiful in no time Heavy duty security strikes with 3" screws Round and square latch faceplates Limited lifetime mechanical and finish warranty Beautiful designs and finishes to match the look and style of any home Product Technologies: Keyed Entry (Single Cylinder) Exterior Only Function: Weslock exterior only single cylinder handlesets feature the exterior trim of a working mechanical lock set, and require an associated interior pack for full installation. Single cylinder handlesets lock and unlock from the exterior with a key, and from the interior with an associated thumb turn. Specifications: Backset: 2-3/4", 2-3/8" Center to Center: 5-1/2" Cross Bore: 1-5/8", 2-1/8" Cylinder: 5 Pin Door Thickness: 1-1/2", 1-3/4", 1-3/8", 1-5/8", 1-7/8", 2" Edge Bore: 1" Handing: Left, Reversible, Right Latch Faceplate: Round Corner, Square Corner Projection: 2-5/8" Length: 17" Width: 2-11/16"Additional Functions: 351 (This Model) : Single Cylinder 351DC: Double Cylinder 350: Single Dummy About Weslock: If security, safety, and style are important to you, then Weslock is your choice for quality hardware for your home. Weslock hardware is well built, and designed to last through years of use.