Where does a burglar attack first? That's right, your windows and patio doors. At least according to police crime statistics.
With a conventional screwdriver or crowbar, a burglar only needs a few moments, and bang, he is standing in your living room. And it doesn't matter whether you have the window tilted or closed. If it is not secured, it can be levered open in seconds.
This is what we recommend for you: One security lock per metre is the ABUS rule of thumb. This usually means around three additional security locks for a very large window – for example, floor-to-ceiling patio windows or other large windows.