The throat size range of mcw4 type ridge ventilator and MCW5 type concealed streamlined natural ventilator is between 1500mm-9000mm. These two streamlined ventilators are larger and heavier. The former is often installed at the slope of the roof; the latter is often installed at the ridge of the roof. The throat size of mcw6 natural ventilator and finished slope lighting ventilator mcw7 is small, between 600mm-1000mm, usually installed along the slope of the roof, suitable for large-span industrial plants.

Whether it is a small-throat down-slope natural ventilator or a large-throat finished ventilator, it is mainly composed of skeleton, flashing board, outer guard board, drainage groove, flashing board, end sealing board and other components. Arc-shaped appearance, beautiful atmosphere. The former has more uniform lighting, ventilation and smoke extraction; the latter has high ventilation and smoke extraction efficiency and good lighting performance. At the same time, the ridge ventilator produced by Mcwell adopt full-structure waterproof technology. Compared with other manufacturers on the market using silicone waterproof ventilators, Maxwell streamlined lighting ventilators have better waterproof effect, avoiding the problem of rainwater leakage in the later stage.