Adjustable Size: The window lock measures 2.36 x 7.87 inches/60 x 200 mm. You can adjust the length of the window restrictor chain according to the size of your window opening. No more worrying about difficult-to-control opening distances; our window locks ensure good ventilation while keeping your baby and cats safe inside. Double Switch Design: This window lock adopts a double switch locking design; you must press the buttons at the same time to open the window. Specially designed to protect children and pets, these reliable window and door locks provide additional protection to keep your babies, pets, and family safe. Easy to Install: Our window locks are designed with an adhesive backing. Simply peel off the adhesive tape on the back for easy installation. They stick securely and are not easy to fall off. The punch-free design will not damage furniture. Perfectly lock out all the hazards in your home, so you no longer have to worry about the safety of your windows from your children or pets. Wide Applications: The window locks are adjustable in length to fit a variety of furniture in your home. You can use them on cabinets, doors, drawers, refrigerators, windows, washing machines, balconies, etc. Protect your children and pets from danger and provide additional security for families.