The Design House 702332 Delavan 2-Way Latch Entry Straight Door Handle is finished in oil rubbed bronze and designed for left or right hand doors. This is a single cylinder lock with a keyed exterior and a thumb-turn interior. This lock fits the two most common backsets in the U.S. (2-3/4-inch and 2-3/8-inch). The 1/2-inch latch bolt is plated in nickel and features a 5-pin high security core. Once in place, the bolt does not budge. With home security in mind, the lever accepts a key on one side of the lock but is operated by a turn-button knob on the other side. Use this lock on standard 1-3/8-inch and 1-3/4-inch thick doors. This product has a 1-inch by 2-1/4-inch radius corner face plate. If you are preparing your door for this deadbolt, the cross bore should be 2-1/8-inches in diameter and the edge bore should be 1-inch in diameter. This product is ANSI Grade-3 certified, which means this deadbolt is rated for residential security. Designed and manufactured by Design House, the trusted source for quality lighting, hardware, plumbing, kitchen, and bath products for every taste and budget.