Pamlico Air 16 in. W X 16 in. H X 1 in. D Fiberglass 4 MERV Air Filter is a high-quality, 1 pack air filter designed to improve the air quality in your home or office. With its 4 MERV rating, it effectively captures particles as small as 3 microns, helping to reduce allergens and pollutants in the air. Its durable fiberglass construction ensures a long-lasting performance and its compact size of 16 in. W X 16 in. H X 1 in. D makes it easy to install in most air conditioning units. Improve your indoor air quality with the Pamlico Air Fiberglass Air Filter.