Easy to Install The installation process is very simple, just place the window locks for up and down windows flat on the window or door track to fix the window or door in place, no tools are required for installation and removal, very convenient (vertical windows can try to fix with Velcro or screws). Easy to Carry: The window blocker security bar is small and portable, suitable for storage in suitcases, can be used in hotel rooms, rental apartments and dormitories, window security rod can be used to ensure the safety of your accommodation when traveling. Note: Before purchasing our window brace security bar, please confirm your window size to avoid the situation where it cannot be used. This window jammer lock bar is only suitable for small windows (1118 inches), if your window is larger, you are welcome to enter the store to purchase another longer window lock bar (1750 inches). Antitheft and ventilation at the same time: The window safety bars can resist the impact of forced entry and effectively prevent thieves from entering through patio sliding windows or doors. The window bars security inside can easily keep the window at the ideal width to prevent children or pets from accidentally climbing out of the window, ensuring the safety of children/family. Heavy Duty Window Lock: The adjustable window lock bar is made of highquality metal with a smooth surface and almost no installation is required. It can effectively resist impact more effectively than other plastic or PVC products, and it is thicker and more durable, and will not deform and rust. This window security bar vertical is easy to use and remove, and will not affect your window opening and closing.