This product comes in a 2-Pack Genuine OEM replacement media cartridge PGAPXCAR2020-A02 for the Carrier Performance Series Germicidal Air Purifier  and the Carrier Evolution DGAPAXX2020 cabinets. Easy to replace media cartridge High filtration efficiency: MERV 13 Filter life varies from home to home and is based on several factors. Most homeowners find that the filter lasts for 8 to 12 months. Captures and kills airborne viruses, bacteria and mold spores Nominal size 20" x 20" x 3" Actual size 21.0" x 21.9" x 2.6" Product is listed and rated by Underwriters Laboratories as U.L. Class 2   *Carrier and Bryant use suffixes -A01, -A02 and -A05 to indicate the number of air filters in a package. -A01 contains 1 filter, -A02 contains 2 and -A05 contains 5 filters. We leave the suffix off our item numbers and all items are in quantities of 1.