Aprilaire Merv 13 Replacement Media for 1410/2410/3410/4400

Aprilaire 413 Air Filters are designed exclusively by Aprilaire to work with Aprilaire Model 4400, Model 3410, and Model 2410 Air Purifiers. If you added the Upgrade Kit 1413 to your Aprilaire Model 2400 or Model 2140 you can also use the Aprilaire 413 Air Filters Features: High-efficiency MERV 13 rating Genuine Aprilaire Self-Seal™ #413 ensures the best performance Change Aprilaire 413 Air Filters once a year