14x20x4 Merv 13 Universal Air Filter By Tier1 (6-Pack) Hydrologic and 401 Installation Simple push

and 401 Installation Simple push to install Flow Rate 0

Potassium permanganate regeneration recharges the media

Dive in with Tier1

The AP431 is as easy to change-out as a light bulb

14x20x4 Merv 13 Universal Air Filter By Tier1 (6-Pack) Hydrologic and 401 Installation Simple pushOur Tier1 14x20x4 Air Filter MERV 13 comes in a 6 Pack. These pleated high capacity filters are constructed using electrostatically charged filter media. This 100% synthetic material offers significantly higher particulate efficiency than typical poly cotton media pleated filters, and captures the smallest and most troublesome airborne particles and allergens, such as particles that carry viruses and bacteria, pollen, mold spores, fine dust and pet