AAF Flanders EZ Flow II 20 in. W X 20 in. H X 1 in. D Fiberglass 4 MERV Air Filter is a high-quality air filter designed to improve the air quality in your home or office. With a MERV 4 rating, it efficiently captures large particles such as dust, pollen, and lint, making it perfect for households with pets or allergies. Its durable fiberglass construction ensures a longer lifespan and easier maintenance. Upgrade your air filtration system with the AAF Flanders EZ Flow II air filter.