Generally speaking, the filters of the fresh air system are divided into three levels: primary/coarse effect filter, medium effect filter, and high efficiency filter. From G1 to H13, the higher the level, the better the filtration effect, but the corresponding The wind resistance will be greater, so the higher the density of the filter used, the higher the performance requirements for the motor and the overall performance of the fresh air blower.
The H14 grade high-efficiency filter material has strong hydrophobicity, chemical resistance, waterproofness and low wind resistance, and can achieve high dust removal efficiency. For some extremely small particles with a diameter of 0.1um-0.3um, the filtration grade Can reach H13-U16.
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