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China High Capacity G4 En779 24X24X2 Pre Pleated Air Filters - China 16X20X2 Pleated Filter, G4 En779 Filter
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European Standard En 779 G4 Cleanroom Panel Pre Filter Air Filter Synthetic Fiber Filter Efficiency Aluminum Or Galvanized Steel - Buy Panel Pre Filter,Cleanroom Panel Filter,G4 Panel Filter Product on Alibaba.com
![ISO 16890-1: 2016 is an international standard that relates to the testing and classification of air filters. It replaced the EN779: 2012 standard, which was based on measurements of 0.4μm particle filtration efficiency. - Klimasystem ISO 16890-1: 2016 is an international standard that relates to the testing and classification of air filters. It replaced the EN779: 2012 standard, which was based on measurements of 0.4μm particle filtration efficiency. - Klimasystem](https://klimasystem.info.pl/wp-content/uploads/2020/06/4.jpg)