This patio door latch is ideal for both right- and left-handed patio doors 1” to 1 1/8” thick. Comes with a key lock for additional security. Used to upgrade or replace damaged, missing or worn-out flush mounts. Includes four different latch hooks for different applications. Quality and durable construction ensures reliable everyday use on your sliding patio door. All installation hardware is included. Easily installs in 6 5/8" center to center hole spacing. High-quality finish allows it to blend in perfectly with your door and frame.