Keep your indoor air clean with FilterBuy's 10x20x1 air filter. This pleated filter is made of polyester and features electrostatic filtration technology, capturing up to 99.97% of airborne particles. Its MERV 8 rating ensures that it efficiently removes dust, dust mites, pet dander, bacteria, and pollen from your air. With a filter life of 3 months, this pack of 1 air filter is perfect for your air conditioner or furnace. Its actual size of 9.5 x 19.5 x 0.75 inches (20 x 10 x 1) and paperboard frame material make it easy to install and maintain. Made in the United States, FilterBuy provides you with a reliable and high-quality air filtration solution.