COMPATIBLE AIR PURIFIER MODELS : Pulluty 116130 HEPA Filter H Widely compatible with Winix 5500-2 and AM80 air purifier. H13 TRUE HEPA FILTER H : The high efficiency 116130 HEPA air filters capture 99.99% of airborne particles and particles as small as 0.01 microns. The activated carbon prefilter absorbs smoke, cooking fumes and noxious odors from harmful volatile organic compounds. VALUE PACKAGS : Package includes 2 x H13 True HEPA Filter and 2 x Activated Carbon Filter. For the best performance, it is recommended to replace the HEPA filter every 6-8 months, replace the activated carbon pre-filter every 2-3 months for the best performance (depending on your usage and environment), and obtain higher filtration performance for long-term use. ACTIVATED CARBON PRE-FILTER : The activated carbon pre-filter of 116130 filter h collects dust, pet hair, and other large particles, while extending the life of the HEPA filter. Treated carbon takes in volatile organic compounds from the air and reduces odors from smoking, cooking and pets. WHY CHOOSE US : Pulluty has been committed to providing all customers with high quality and cost-effective air purifier filters to help them create a better living environment.