Getting better air in your home is a great way to improve your general health and well-being. Designed for residential use only, these non-electrostatic Filtrete basic pleated dust air filters by 3M capture dust and lint particles that may be floating through the air so that you can breathe easier. They carry a Microparticle Performance Rating of 100 and come in packs of 2 so you'll always have a replacement filter on hand when you need it. Each filter measures 20 in. x 25 in. and can last up to 3 months.