Mcwell's linear natural vent is mainly for daylighting, supplemented by ventilation. The opening methods are divided into single-piece and conjoined types. Because the linear natural ventilator is parallel to the roof, the wind resistance coefficient is small, so it is suitable for the steel structure factory buildings of logistics storage where the lighting is mainly used at ordinary times and the ventilation is only opened when necessary. The daylighting smoke vent is controlled by electric opening and closing, and the full opening angle is 90︒

At the beginning, Mcwell's linear smoke vents also need to be screwed, and silica gel is used to fill the gaps. However, the screw holes may have rust, corrosion and other problems. The silica gel has the problem of service life. The sun's rays are prone to ageing and cracking of silica gel, leading to hidden dangers of water leakage.

Now Mcwell updated linear smoke ventilator with nail-free and glue-free technology. The entire production and installation process does not use screws and does not use silica gel to fill gaps, thereby avoiding potential water leakage hazards and ensuring the service life of the entire workshop.