1.[COMPATIBLE AIR PURIFIER MODELS]: Vital 100 HEPA Filter compatible with LEVOIT Vital 100 Air Purifier.NOTE:This is not a OEM product but compatible with LEVOIT replacement filter. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility. 2.[H13 TRUE HEPA FILTER]:The high efficiency Vital 100 HEPA air filters capture 99.97% of airborne particles and particles as small as 0.1 microns. The activated carbon prefilter absorbs smoke, cooking fumes and noxious odors from harmful volatile organic compounds. 3.[VALUE PACKAGS]:Package includes 3 x H13 True HEPA Filters.For the performance, it is recommended to replace the HEPA filter every 6-8 months.For the performance (depending on your usage and environment), and obtain higher filtration performance for long-term use. 4.[ACTIVATED CARBON PRE-FILTER]:The activated carbon pre-filter of filter collects dust,pet hair,and other large particles, while extending the life of the HEPA filter.Treated carbon take in volatile organic compounds from the air and reduces odors from smoking, cooking and pets.