Secure your patio doors with the Barton Kramer 444W Patio Door Lock. This sleek white-plated lock is designed with a strong upward locking mechanism and night latch for added defense. Comes with all the necessary screws and a keeper for easy installation. Enjoy peace of mind with reliable security. Maximum Door Thickness 1.125 in. Depth 1.125 in. Height 6.625 in. Width 1 in. Minimum Door Thickness 1 in. Weight 0.50 lb. Material Zinc Finish White For Assembly to Door Place interior pull in rail by rotating cam latch toward cut-out. Place exterior pull in rail. Place handle pull on interior pull. Secure entire assembly with 2 No. 10.32 machine screws. Align keeper in jamb, allowing 1/16 clearance between bottom of keeper and cut-out. Fasten securely with 2 sheet metal screws.