With a shutter element, you can create both beautiful architecture and efficient ventilation and security, even when the shutter is fully open.


A window is not just a window, and often it needs to serve a purpose beyond just opening and closing. We have a strong focus on alternative solutions such as ventilation windows, fire-rated windows, and other windows where functionality plays a crucial role. Get an insight into several of our operable windows below.

Our ventilation window. The perfect solution for renovating older residences that need constantly ventilation in order to secure a good indoor climate.


We are a certified producer of fire elements and we help you developing special doors and windows with fire-resistant qualities – without compromising on the aesthetics. 


With KRONE Flow, you can prioritize natural ventilation while achieving highly effective sound reduction at the same time.