This patio door latch is ideal for both right- and left-handed patio doors 1” thick. The inside latch features “No Lock Out” technology, eliminating the worry of accidentally locking yourself out. Quality and durable construction ensures reliable everyday use on your sliding patio door. All installation hardware is included. Easily installs in 3-15/16". center to center hole spacing. High-quality finish allows it to blend in perfectly with your door and frame.