The weather protection grid, System 732bew, from MLL Hamburg, is a ventilation grid made of aluminium with a free ventilation cross section of 50%. This ventilation grid is movable. The slats, and thus the air flow, can be adjusted manually using an adjustment lever. These ventilation grids enable convenient air exchange entirely according to your needs. The system 732bew is equipped with a Z-slat of the heavy series of type 030bew in enclosed Frame 702bew.