High winds and high efficiency air filter efficiency, air volume, low resistance with high efficiency, high winds, low construction cost, and is applicable to air conditioning units and a variety of wind capacity terminal filter air purification equipment. V series convolution air filter air volume, high dust holding capacity, easy installation using ABS plastic frame, the effective filtration area, low resistance, light weight, dust holding capacity, high air flow. ABS does not produce toxic gases when burned, it is conducive to environmental protection and waste disposal. HEPA filter can be used as a pre-filter applies to extend the HEPA filter pot life. Materials: 1. Frame: plastic or steel; 2, filter: glass and fiber; 3, Seal: special glue; 4, partitions: special glue.