Type | Filter Class | Average Efficiency | Initial Resistance(Pa) | Gram Weight(g/m²) | Thickness(mm) | Color |
SHW-WF | G4 | 35% | ≤3 | 165±5 | 5±1 | white |
M5 | 45% | ≤6 | 185±5 | 6±1 | white/light yellow | |
M6 | 65% | ≤11 | 210±5 | 6.5±1 | green/organge | |
F7 | 85% | ≤17 | 218±5 | 7±1 | pink/purple | |
F8 | 95% | ≤22 | 226±5 | 7.5±1 | light yellow/dark yellow | |
F9 | 98% | ≤28 | 238±5 | 7.5±1 | white/light yellow |