Air Purifier Filter For VairoVac VairoSafe Filter VS353 Unused. Opened for inspection. This product is sold on Rakuten for around 70,000 yen. ● 4-layer filter structure (pre-filter, ULPA filter, activated carbon, post-filter) effectively captures even minute viruses. ● 3-port filter (6.4 / 9.5 / 22mm) ● Performance: Removes 99.999% of particles of 0.1-0.2 micrometers ● Filter life: Up to 35 hours ● For business use.