16x28x6 Replacement Air Filter for Aprilaire 2400 Air System, Replaces Model 401 Filter

The Aerostar 16x28x6 replacement air filter for the Aprilaire 2400 Air System is the perfect size replacement for the Aprilaire Model 401 furnace and air filters. Designed for residential use and available in multiple filtration levels, these air filters deliver cleaner air throughout your home with less frequent filter changing than standard filters.