AAF Flanders EZ Flow II 19 in. W X 27 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. Made with durable fiberglass material and featuring a 4 MERV rating, this filter effectively captures dust, pollen, and other airborne particles to keep your space clean and healthy. With its compact size and easy installation, maintaining clean air has never been easier. Upgrade your air filtration system with the AAF Flanders EZ Flow II 19 in. W X 27 in. H X 1 in. D Fiberglass 4 MERV Air Filter.