Passage Function: Passage door hardware has no locking mechanism. Both the interior and exterior handles are always free making it perfect for hallways, closet doors, and anywhere else a lock isn't needed. Passage door hardware can also be used in conjunction with a deadbolt to secure a back door or entrance. Features: Quick and easy installation when installed onto prepared standard doors Exceeds criteria for BHMA Grade 2 Security certification All metal construction ensures a long lasting and durable product for years to come Deltana offers a limited 3 year mechanical and 1 year finish manufacturer warranty Specifications: Backset: Adjustable 2-3/8" or 2-3/4" Cross Bore: 2-1/8" Edge Bore: 7/8" Door Thickness: 1-3/8" to 1-3/4" Handle Projection: 2-3/8" Trim Height: 2-5/8" Trim Width: 2-5/8" Handle Length: 5-1/4" Handing: Reversible Left or Right