Natural vent is mainly developed around the aerodynamic wind carrier type theory "when the wind acts on an object, the windward side is pressure, and the leeward side and the downwind side are suction". Natural vent performance (1) While ensuring strength, reduce wind pressure.

Streamlined arc shape, which not only ensures the strength of the ventilator body, but also effectively reduces the wind pressure on the ventilator body. Mcwell natural ventilator is mainly divided into low-profile ventilator and streamlined continuous rooflight in terms of appearance. Light-weight natural ventilator generally have small throats, and the ventilation volume is not as high as streamlined continuous rooflight. They are suitable for installation on the roofs of small and medium-sized industrial plants. The streamlined ridge vents have a relatively wide range of applications, and are suitable for large steel factory buildings.

Ridge ventilator performance (2) Large volume improves air collection and discharge capacity. The large volume formed by the height and arched shape of the roof natural ventilator can effectively improve the indoor air collection and discharge capacity. The snow load capacity of the roof ventilator depends on the design form of the steel frame, the material specification of the steel frame and the thickness of the rain shield. Among them, the selection of the material specification of the component is very important.