The BURG-WÄCHTER window security device WinSafe WS 22 is extremely stable due to its zinc die-cast material and provides significant resistance against forced entry. The double bolts offer dual protection: you can choose to secure two windows simultaneously or one window with double security. The construction is VdS-tested and ECB•S-certified for installation on wooden or aluminum windows and doors. The double bolt is also suitable for windows and doors made from other materials, such as plastic. The installation of the WinSafe WS 22 is particularly quick and easy. It is ideal for placement between two windows or between windows and (balcony) doors. It can be mounted on the upper, lower, and handle sides of the window or door.