MCW1 type natural vent (parallel air duct type) is a new type of thin natural ventilation system, which combines technical inventions with traditional technology. The special structure makes the effective ventilation area and lighting area of ​​the ventilation skylight increase. The external temperature difference guides the indoor hot air flow to move obliquely upwards, reducing air flow energy loss and directly improving ventilation efficiency. After simulated ventilation experiments, compared with the same size low-profile ventilator selected by other atlas standards, the MCW1 type's ventilation efficiency

can be increased by more than 11%. The throat size of MCW1 type natural vent ranges from 1.2 meters to 9 meters. It is installed on the roof of an industrial plant, it can be installed directly on the roof ridge, it can also be installed vertically

to the roof ridge for slope installation, the third installation methods is slope installation across the roof ridge.  If the size of the throat is small, it is recommended to install it in multiple rows along the slope. If the size of the throat is larger, it can be installed at the ridge of the roof. Therefore, the layout of the MCW1 type natural ventilator can be reasonably installed according to throat's size to meet the requirements of building ventilation and lighting!