Selection of coffee filters is a vital step in brewing perfect coffee - don't settle for anything less than Bunn® quality coffee filters. Using the results of years of research, Bunn® manufactures the best filters from high quality, heavyweight paper, so the water flows properly through the coffee. Our filters are uniquely designed for strength with taller walls to help reduce overflow and grounds in your coffee. Bunn's paper stock used in the manufacturing of our coffee filters is produced using an elemental chlorine-free (ECF) bleaching method.