Smilyan BS-03 True HEPA Replacement Filter for PARTU and Slevoo BS03 HEPA Air Purifier, 3-in-1 Filtration System, 4 Pack(Not fit for BS-01)

BS-03 True HEPA Replacement Filter for PARTU and Slevoo BS03 HEPA Air Purifier (Not fit for BS-01)

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 99.97% of airborne particles down to 0.3 microns in size

Suggest to replace every 6 months for optimal performance. 2 pack filters is good enough so you can simply them when needed.