Pamlico Air 10 in. W X 30 in. H X 1 in. D Fiberglass 4 MERV Air Filter is designed to improve the air quality in your home or office. With its fiberglass material and 4 MERV rating, it effectively captures and filters out dust, pollen, and other airborne particles. Easy to install and replace, this pack of one filter will keep your air clean and fresh for months to come. Breathe easy with the Pamlico Air 10 in. W X 30 in. H X 1 in. D Fiberglass 4 MERV Air Filter.