Passage Function: Schlage's passage door knob sets have no locking function and are free turning on both sides. These knobs are perfect for a hallway or closet where a lock isn't necessary. Passage knobs can also be used in conjunction with a deadbolt to secure an entrance or back door. Product Features: A gives you the peace of mind that this product will be looking good and functioning smoothly for as long as you own it.(Finish does not include Oil Rubbed Bronze because it is a living finish and it is expected to patina over time) Installation is easy, all you need is a screwdriver and a little time. The set is designed to fit standard prep doors and most installations should take just a matter of minutes. BHMA/ANSI Grade 2 certified which indicates excellent performance across a range of residential applications. This product is built from high- materials to give you exceptional security. Specifications: Backset: Adjustable to 2-3/8" or 2-3/4" Cross Bore: 2-1/8" Edge Bore: 7/8" Projection: 2-3/8" Door Thickness: 1-3/8" - 1-3/4" Handing: Left, Right, Reversible Product Weight: 1.55 lbs Handle Design: Siena Trim Design: Addison Latch Faceplate: Drive-in, Round CornerAdditional Functions: F10-Sie-Add (This Model): Passage Door Knob Set F40-SIE-ADD: Privacy Door Knob Set F51A-SIE-ADD: Panic Proof Keyed Entry Door Knob Set F80-SIE-ADD: Storeroom Keyed Entry Door Knob Set F170-SIE-ADD: Single Dummy Knob