Filter material is a new type of composite non-woven fabric, with many advantages of anti - static fiber, high dust capture rate, low resistance, good ventilation, large capacity ,etc. 
Every 2 bags are fixed with metal bar to strengthen the filter, and prevent the high wind speed from wind friction and rupture. 
Made in hot-melt way, the edge is not easy to leak or rupture. 
Frame: Aluminum alloy frame or galvanized steel frame 
Temperature resistance: 80℃  Humidity resistance: 80% 
Widely applied in the air conditioning system for medium filtration