A six-chamber system with a depth of 85 mm with the possibility of using fillings up to 51 mm wide. The IDEAL 7000 series opens up new possibilities in the production of external doors. Thanks to the multi-chamber structure, installation depth of 85 mm and the possibility of using glazing units and fillings up to 50 mm wide, it was possible to significantly improve the thermal insulation parameters of the structure, reaching the U f value of up to 1.2 W / m 2 K. As part of the system solution, a low door threshold of 20 mm is available, which meets the requirements of barrier-free construction and enables trouble-free entry and exit. Specially shaped threshold feet allow for connection with additional system profiles, such as extensions. The wide aluminum drip efficiently drains water to the outside