Smilyan BS-03 True HEPA Replacement Filter for PARTU and Slevoo BS03 HEPA Air Purifier, 3-in-1 Filtration System, 2 Pack (Not Fit for BS-01)

BS03 HEPA Filter Replacement compatible with PARTU HEPA Air Purifier Part U, Part X and Slevoo BS-03 HEPA Air Purifier

High-efficiency replacement filter: 3-in-1 True HEPA filtration system includes Pre-filter, True HEPA Filter, and Activated Carbon Filter

H13 Grade True HEPA Filter captures up 99.97% of airborne particles down to 0.3 microns in size