One of the more interesting solutions from window handles is the TBT system handle - Tilt Before Turn, meaning tilt before opening, designed for windows with envelope ironwork TBT. Its action allows tilting the window by turning the handle to a horizontal position, even in case when the lock is blocked. Opening the window takes place after turning the handle to the vertical position after unlocking the lock with a key. These door handles allow easy ventilation of the rooms while protecting against accidental opening. The range covers handles of TBT type performed both on plastic rosettes, as well as on object handles MA system rosettes.