Automatic ventilation window

It is made of high-quality engineering plastic injection molding, and the density is stronger and stronger; The raw materials are added with anti-ultraviolet materials, which have strong anti-aging properties and longer service life; tight sealing, flexible opening, and anti-bird nets on the air inlet; The double pulley guide design is used to adjust the opening of the damper, which effectively reduces resistance and enhances the service life of the rope; The first air inlet door adopts a pulley device to reduce friction and enhance the service life of the rope; Optional installation of deflectors to effectively control the flow direction.