Aprilaire 313 (2-Pack) - 20" x 20" x 4" Clean Air Expandable Filter, MERV 13

Aprilaire 313 Healthy Home Air Filter for Aprilaire Whole-Home Air Purifiers, MERV 13, for Most Common Allergens• BUY WITH CONFIDENCE This genuine replacement air filter was designed and manufactured in the U.S.A. by Aprilaire – the leader in indoor air quality solutions, to optimize the performance