Package Included:
"Air Purifier-1Pack": 1x MSB3 Air Purifier + 1x Pre-installed H13 HEPA Filters
"Air Purifier-2Pack": 2x MSB3 6 Air Purifiers + 2x Pre-installed H13 HEPA Filters
"Replacement Filter 2 Pack": 2x Extra Original H13 HEPA Filters for MSB3
"Replacement Filter 4 Pack": 4x Extra Original H13 HEPA Filters for MSB3
Note: We recommend you to buy our original H13 True HEPA Filter to avoid the compatibility problems.