With economic development and rising living standard, more and more families pay more attention to the environmental health of their houses, so many families choose to install new air circulating system in order to guarantee the indoor air quality. Common central air system mainly includes the new fan, ventilation duct, filter screen, tuyere . These several key components help to form a outside-to-inside air loop. That not only can keep indoor air moving, but also can help to exhaust furniture or decoration pollution at any time. But under rainy and windy weather, users often encounter a problem that rain always flows backward through the exterior vents, especially in summer when typhoon and heavy rain happens in east China and south China.

How to solve a problem like that? One reasonable solution is to add a manger at the connection between the tuyere and the duct(see the picture). When there is windy rain, the manger can effectively block the rian outside the tuyere, preventing rian leaking indoor. Most of the tuyere sold in the market doesn’t have this design, bu Deflecto ventilation can make it, thinking from the customer's perspective so as to ensure the interests of customers

Deflecto Ventilation has been specialized in researching and developing vents, ducts for many years, which makes it a well-known manufacturer domestically and an excellent working partner for hundreds of central ventilation system integrator.