The two-panel door, System 624, from MLL Hamburg, is a weather protection door made of aluminium with a free ventilation cross section of 50%. The system 624 is equipped with a sliding-water safe, Z-slat of the medium series of type 020. Fastening to the slats occurs via the retaining rail 004. Doors from MLL Hamburg can also be manufactured individually for you on request with all other slats from the weather protection program.