Vacuum cleaner filter is Widely used as the pre-filtration and single-stage filtration in the air systems of household vacuum cleaners, industrial vacuum cleaners, reciprocating air compressors and internal combustion engines. Excellent chemical fiber nonwoven used as the filter core material ABS, PP, PC, PVC plastic frame, or two part PU adhesive as the frame end cover Figures of column and squareness, etc Large filtration area, high dust holding capacity, long life (washable), economical, utility, easy to install. Filtration efficiency class: G3, G4, F5, F6, F7, F8