[Important Tip!!! ]Before installation, please carefully measure the width of your door and window frames (no less than 1-1/16 inch is ok), thickness and other dimensions to ensure accurate installation and achieve the best use. [More secure double locking] The 2025 upgraded patio sliding glass door lock/latch with key is additionally equipped with a key lock, building an impenetrable security line of defense for your home, allowing you to have absolute peace of mind whether you are busy during the day or sleeping soundly at night. [Two installation ways available] PILISPARK sliding door and window locks offer you two installation methods. You can either use the traditional screw fixing method to ensure that the lock is securely attached to the window or door. You can also choose paste installation, which is simple and convenient, no need to drill holes, and will not cause any damage to the door or window glass. Meet the installation needs of different users and the actual situation of doors and windows. [More intimate child protection] Do you feel very agonizing for always paying attention to the safety of your baby? This sliding glass door child lock can effectively prevent children from accidentally opening doors and windows when unattended, away from potential dangers, and create a safe home environment for children. [Easy to use & flexible installation] The patio lock for sliding door can be locked initially by simply pressing, no need for complicated operation, and then turn the key to achieve double locking effect, easily realize the tight locking and opening of doors and windows. Secondly, it can be perfectly installed on the top and bottom rails of doors and windows, which is more stable and convenient to meet your diversified needs. Colour:White Material:plastic Package Contents: 2 * Door Security Foot Lock