G4 primary folding filterStructure andprinciple：

oStructural compositionMainly composed of an outer frame, filter material, and protective net. The outer frame is usually made of materials such as hard paper frame, aluminum profile, aluminum folding frame, galvanized frame or stainless steel frame, which serve as support and fixation. The filter material is generally synthetic fiber materials such as non-woven fabric and chemical fiber cloth, which are folded and placed inside the outer frame. Galvanized welded mesh, aluminum mesh, or stainless steel mesh are commonly used as protective nets, which are attached to the air outlet surface of the filter material.

oWorking principleFilter dust particles in the air through interception, inertial collision, and other methods. When air containing dust particles flows in, particles larger than the mesh size of the filter material are intercepted; Larger particles deviate from the direction of the airflow due to inertia and collide with the filter material to be filtered out. The folding design increases the windward area, making the airflow smoother and more uniform when passing through the filter, effectively blocking dust particles between the folds, and allowing clean air to flow out evenly from the other side.

G4 primary folding filtercharacteristic：

oLarge filtering areaAdopting a gradually folding structure, its filtering area can be about 5 times larger than that of a general flat filter, which can fully utilize the surface of the filter material and improve the filtering efficiency.

oHigh air volume and low resistanceIt can allow a larger airflow to pass through while generating less resistance, without causing excessive pressure loss to the ventilation system, ensuring the normal operation of the ventilation system.

oHigh dust holding capacityThe larger filtration area and reasonable structural design enable it to accommodate more dust and particulate matter, extending the service life of the filter and reducing the frequency of replacement.

ocompactRelatively small in size, occupying less space, easy to install and arrange in various ventilation systems, especially suitable for places with limited space.

oLow priceCompared with other types of high-efficiency filters, the initial folding filter has lower cost and higher cost-effectiveness, which can reduce the operating cost of the ventilation system while ensuring a certain filtering effect.

oEnvironmental protection and energy savingSome filters with paper frames can be incinerated after use, without pollution, and meet environmental protection requirements; Moreover, its low resistance can reduce the energy consumption of the ventilation system and achieve energy-saving goals.

G4 primary folding filterapplication area：

General air purification and intermediate filtration for air conditioning systems in fields such as electronics, pharmaceuticals, mechanical instruments, metallurgy, petroleum, chemical, light industry, and food. It is generally used in conjunction with other air purification equipment, such as FFU, air shower room, clean room, etc.