What is behind the word "fitting"?
Mechanism built into the sash for locking to the frame.
The term fitting covers all mechanical components of a window which are mounted in the fitting groove of the window sash. As functional fittings they have the task of controlling the opening and closing function of the window. Functional fittings can also be provided with a child lock or offer protection against burglars. When the window is closed, a contact pressure is created which ensures that the window is sealed against rain and wind.