Size: 50*27*28mm; Adjustable clamping distance is 4-38mm (0.31-2.17inch), suitable for most window frames. We suggest you better measure your window frame before movingcommand. The sliding window wedge limitation lock is made of aluminum alloy material, which is durable and thickened. Anti-scratch and anti-wear manufacturing silicone rubber cushion. Easy installation and no need to punch forthe door limiter. Open or close the windows in the right position according to your needs. Adjust the spacing of the window lock and put it on the window frame, insert the key and turn the key to adjust the width to fix the lock for severaltests until the key slot cannot move, which means the window door restrictors are effective. Sliding window locks can be applied to most places, such as patio doors, sliding glass doors, windows and sliding doors of hotels, residences, hospitals, schools and of offices forensure the safety of children. Designed for horizontal and vertical sliding windows and sliding doors like patio doors, sliding glass doors, sliding windows, etc. This sliding window stopper lock for home and office, you can fix the window, effectively prevent your child from opening and climbing the windows by themselves, anti-theft and keeping fresh air inside. interior. Limit ventilationinterior, improve air circulation, and protect the safety and anti-theft of family and children. Description: Stainless steel material, wire drawing process, thickening material, strong and durable material, not easy to deform Silicone locking pad, strong abrasion resistance and aging resistance, high temperature resistance (normal temperature range, not flame retardant) Lock doors and windows, free adjustment, no punching, simple installation To prevent the tragedy of children and babies from accidentally falling from the windows or the building. The size of window slots can be controlled to ensure air circulation and prevent children from opening windows, probesor climb at will. To prevent thieves from entering, you can lock the windows to prevent thieves from entering the room at will. It has a wide range of applications. It can fix screen windows, sliding windows, floor-to-ceiling windows, sliding doors, etc. Setup: 1. Prepare security window lock; 2. Determine the width of the window / door channel; 3. Adjust the width between the two joints 4. The width of the joint must be less than the distance of the trunking; 5. Turn the key to the right to tighten and secure 6. Complete the Anti-Theft Limiter installation Package includes: 2 * window door locks and key