Available in 20x25-inch and 16x25-inch models, the product ships complete with frame, removable grille, filter locks, and a MERV 11 Aprilaire filter, which is upgradable to MERV 13. For California ...

AprilAire's four-inch air filters are included in the American Lung Association's Proud Partner program.* "Within our rigorous suite of Healthy Air products, we are immensely proud of our line of ...

Aprilaire offers spring cleaning ... Healthy indoor air can reduce illness by removing airborne contaminants with a MERV 16 filter for at least 95% efficiency on 0.3 microns.