Abus FG300 security window handles

Lockable window handles are primarily intended to provide security for children, but also apply as a burglar-proof product for certain burglary methods, such as the "hole drill" technique in which a burglar drills a hole through the frame with a drill bit in order to operate the window handle.

Such lockable handles are especially useful for parents, because this way they can control which windows the children can open. Because the handles are all equal-locking, you only need one key for all window handles.

A number of window handles, e.g. the FG 300, are designed for universal use. The square pin can be adjusted to fit any window fits. Irritations over misfits are thus a thing of the past. Assembly is also very easy.