Defender Security U 9847 Patio Sliding Door Loop Lock &ndash; Increase Home Security, Install Additional Child-Safe Security, 2-1/8&rdquo; Hardened Steel Bar with Diecast Base, Chrome Plated SECONDARY SECURITY LOCKING DEVICE: This sliding door loop lock can be used on a patio sliding door as a secondary security lock for increased home safety PRODUCT INFO: This device features a 2-1/8 reach, which is designed to secure the door to the jamb DURABLE CONSTRUCTION: It has a hardened steel locking bar with diecast constructed mounting plate and keeper, with a chrome plated finish EASY INSTALLATION: Installation is quick and easy with the fasteners included with this product, provides additional security for your home or office doors CHILD-SAFE SECURITY DEVICE: This lock can also be installed out of reach of children, providing additional child-safe door security AVAILABE SIZES: It is also available in 1-1/8, 1-3/16, 1-7/16, and 2-1/4 reaches Warranted against manufacturing defects for 1 year