Improve the air quality in your home with Filtrete basic pleated dust filters. Manufactured by 3M, this particular model measures 16 inches x 25 inches with an MPR of 100. Basic non-electrostatic air filters are more effective than fibreglass filters and can last up to 3 months. They work by reducing airborne particles in the air that carry dust and lint, so that you can breathe easier. These filters come in packs of 2 and are designed for residential use only.