... superfine fiber features in high filtering efficiency, and low resistance. *Performance: environment friendly, non-toxic, non-smell, high efficiency, low resistance, white and light, stable anti ... < 16F7ZF-MB50500.4> 95< 25F8ZF-MB85W851.3> 60< 6F5For medium and high efficiency filter, etc.ZF-MB85G851.2> 80< 10F6ZF-MB90W901.3> 90 ...