In line with current trends, the less visible the window’s “mechanism” is, the more aesthetically pleasing it becomes. We offer the innovative Roto NT Designo fitting system, which remains completely hidden on the window. Concealed hinges and the absence of visible covers further enhance the aesthetics and functionality of the window. Smooth window surfaces without protruding parts or recesses also mean easier and quicker cleaning.

In addition, this system allows the sash to open at an angle of 100°. Roto NT Designo features relatively small, compact hinges, leaving enough space around the perimeter for reinforcement of the window up to RC2 class. The bottom hinge comes standard with an integrated anti-burglary security feature.