This twist-in lock is constructed of a Zamak cast housing, an aluminum bolt, and it comes in a black painted finish. It features a 1/2 in. reach with an overall height of 11/16 in. and 1-9/16 in. mounting hole centers. This secondary lock provides increased security when ventilating or securing your sliding patio door, as it prevents sliding and lifting of active panel. Lock is also compatible with some horizontal sliding or windows. Mounts onto the lower back-edge of the sliding panel, and the bolt locks into a 1/4 in. hole that must be carefully drilled into the fixed panel's bottom rail.

For use on patio sliding door systems and some horizontal sliding windows | Securely locks door in the closed or ventilating position | Cast Zamak construct housing with black painted finish | 1/2 in. reach x 11/16 in. body height with 1-9/16 in. hole center spacing | When engaged, this lock prevents sliding and lifting of active panel and features an easy to operate twist-in action | All the necessary mounting hardware is included for a quick and easy installation