Product Advantage :
The negative pressure automatically opens the air window, which is sensitive and convenient to open and close, automatically maintains the indoor and outdoor pressure difference (the automatic opening pressure can be freely adjusted) and can make the external strong light soft; The plate is made of domestic high-quality PC sunshine plate, which has good light transmittance and is not easy to deform. The service life of outdoor exposure is 10 years. The rotating shaft is made of solid stainless steel smooth circle, which can be opened and closed stably and reliably. Various sizes can be customized to meet the needs of customers. The ventilation volume is 12733m ²/ h.
