Product Description Secure your home or office doors with additional security with the U 9847 Patio Sliding Door Loop Lock. This secondary security locking device provides additional, increased home safety for sliding patio doors. It can also be placed out of reach of children, high on a door, so they cannot open the door themselves and enter or exit into dangerous areas. This door loop lock is constructed of a nickel plated hardened steel locking rod with a diecast bracket and keeper with a chrome plated finish. It?s strong and durable, sure to last, and installation is quick and easy. All installation fasteners are included, and it is designed to secure to door to the jamb. This home security device is also available in 1-1/8 in., 1-3/16 in., 1-7/16 in., and 2-1/4 in. reaches. From the Manufacturer This patio sliding door loop lock is constructed of a hardened locking bar and a diecast mounting plate and keeper. The locking bar and plates of this lock come finished in a chrome plating and all required fasteners are included. This locking device features a 2-1/8 in. reach which is designed to secure the door to the jamb for increased safety of the home. This sliding door loop lock is easy to install and is used by many. This item is also available in 1-1/8 in., 1-3/16 in., 1-7/16 in., and 2-1/4 in. reaches.