Clorox is a trusted brand for powerful cleaning and has helped families for over 100 years. The Clorox True HEPA Replacement Filter builds on our trusted legacy by helping you protect your family from allergens, pet dander, dust, smoke, viruses, bacteria and more. It captures 99.97% of allergens and particulates* and reduces viruses and bacteria** so you can breathe easier. The 3 stage 360° filter delivers 360° air purification by capturing particulates in 3 filters: a pre-filter, True HEPA filter and active carbon filter. Fits Clorox Medium Room Air Purifier model # 11030 and Clorox Medium Room Smart Air Purifier model # 11031. Includes 1 Clorox filter that lasts 6-12 months.**** 99.97% effective in capturing particles as small as 0.1 microns that enter the true HEPA filter. ** Reduction of viruses and bacteria as air passes through the true HEPA filter. Actual % of reduction varies. Does not kill viruses or bacteria. *** Cleaning effectiveness and filter life vary by air quality.