Air quality matters. That’s why you trust Aprilaire to keep your home environment safe for you and your family. This genuine Aprilaire 413 Air Filter Replacement is rated MERV 13. That means it makes the air in your home fresh and healthy so your family can breathe easy. It’s proven to prevent 93% of particles between 3.0 and 10.0 microns from passing through your home’s heating and cooling system. That includes dust, pollen, and mold spores, which can irritate allergies and worsen asthma symptoms. Annual air filter replacements are a great way to keep your home and family protected. Aprilaire makes it easy to know what you’re breathing. From the Manufacturer This is the MERV 13 replacement filter for the Model 4400, 3310 and 2410 Aprilaire Air Cleaners. The filter can also be used in the Models 2400 and 2140, provided the Upgrade Kit, part #1413 has been installed. The filter is the heart of the air cleaner and needs to be changed once a year or when your Air Cleaner Control indicates it is time to change the filter. Use only genuine Aprilaire SelfSeal #413 to ensure the best performance of your air cleaner.