ALUPROF’s MB-79N and MB-86N window and door systems range includes a patio/balcony door solution featuring a low threshold fitted with hardware from the ROTO Al Designo series.

This design combines aesthetics and functionality. The low threshold provides daily comfort and safety for users as they move between interior and exterior, while the concealed hardware gives the door a smoothly consistent look, with no hinges or other parts visible from inside the room. The maximum weight for doors produced in this way is 150 kg.

Another distinctive feature of this new solution is its high watertightness. Structures based on the MB-86N have a performance of 1050 Pa.

A detailed presentation of the low threshold with concealed ROTO AI Designo hardware solution can be found in the ALUPROF authorised zone, in our HARDWARE 1. Windows catalogue, in the Hardware for windows / ROTO / Additional parts / Low threshold / AL Designo section.