Keep your air cleaner working like new by replacing your purifier filter. TotalClean® Replacement True HEPA Filters remove up to 99.97% of airborne allergens as small as 0.3 microns, including pollen, dust, and pet dander*. The built-in prefilter captures larger particles, while the activated carbon filter reduces unwanted odors and VOCs** to help you keep breathing cleaner, fresher air.Compatible with Homedics® TotalClean® AP-T40 and AP-T45 5-in-1 air purifiers, this replacement filter is simple to install and provides up to 12 months of optimal performance, so you can relax and breathe easy.