Aprilaire - 413 Air Filters are designed exclusively by Aprilaire to work with models 4400, 3410, and 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.
High efficiency MERV 13 rating
Genuine Aprilaire Self-Seal #413 ensures the best performance
Change Aprilaire 413 Air Filters once a year
If you own an Aprilaire 3410 Air Purifier, your event-based controller can also indicate when it's time to change your Aprilaire 413 Air Filter.