Schlage Works for you. These sets have concealed screws that are hidden behind the rosette, providing a cleaner look to your door hardware, unlike many knobs and levers that have screws that mount through the rosette and are visible on the interior side of the door. A lifetime, mechanically bonded finish gives you peace of mind that this product will look good and function smoothly for as long as you own it. (Finish does not include oil rubbed bronze because it is a live finish and 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 few minutes. BHMA/ANSI Grade 2 certified indicating excellent performance in a range of residential applications. This product is made from high quality materials to give you exceptional security. These levers are field reversible allowing this lever to be used for both right and left handed applications with ease and eliminating any chance of getting the wrong product. Passage Function - Schlage passage door lever sets have no locking feature and swing freely on either side. These levers are perfect for a hallway or closet where a lock is not necessary. Passage levers can also be used in conjunction with a deadbolt to secure an entry or back door. Features: Adjusts to fit all standard door preparations Easy installation makes it a one-person project Interior screws are concealed ANSI/BHMA A156