Aprilaire 210 Air Filter for Aprilaire Whole Home Air Purifiers, MERV 11 (Pack of 1) BUY WITH CONFIDENCE This genuine replacement air filter was designed and manufactured in the U.S.A. by Aprilaire  the leader in indoor air quality solutions, to optimize the performance of your Aprilaire Air Purifier Model: 1210, 1620, 2210, 2216, 3210, 4200, Aprilaire or Space Gard 2200 with upgrade kit VACUUM AND DUST LESS OFTEN by preventing airborne particles from settling on your furniture and flooring. This filter removes airborne particles from the air as it passes through the MERV 11 filter including dust, pollen, mold spores, bacteria, and pet dander BETTER PERFORMANCE thanks to the patented Aprilaire Self-Seal Technology which minimizes the amount of air bypassing the filter EASY AS 1-2-3 TO INSTALL in the unique Aprilaire Interlock Rail System. Unpack. Slide in. Close the door. Done. WORRY FREE We stand behind the performance of our air filters with our 10-year Clean-Coil Commitment