Replacement Filter Media for AprilAire Air Cleaners - #413

This replacement air filter is used for AprilAire Models 2400 and 2140, provided the upgrade kit has been installed. This replacement filter can also be used for the Models 2410 and 4400 Aprilaire air cleaners. 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.