About this item BUY WITH CONFIDENCE This genuine AprilAire 210 replacement air filter was designed and manufactured in the USA by AprilAire – the leader in indoor air quality solutions – to optimize the performance of your AprilAire Air Purifier Model: 1210, 1620, 2120, 2200, 2210, 2216, 3210, 4200, or Space-Gard 2200 with Upgrade Kit 1213 VACUUM AND DUST LESS OFTEN by preventing airborne particles from settling on your furniture and flooring. This AprilAire 210 replacement air filter removes airborne particles as they pass 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. No assembly or cardboard or metal reinforcements needed. NOMINAL AIR FILTER SIZE of 20 x 25 x 4 inches (nominal size is an industry standard filter size system to help you easily identify the correct replacement filter and is not the actual size) PROUD PARTNER OF THE AMERICAN LUNG ASSOCIATION in support of its mission to save lives by improving lung health and preventing lung disease › See more product details