Bunn's Regular Paper Coffee Filter coffee will help you get that caffeine kick in the morning, day, and night. With a top diameter of 9-3/4 inch by 4-1/2 inch bottom diameter, this coffee filter is designed for your standard 12-cup coffee maker. Featuring a semi-permeable surface, passable by liquids, but not your coffee grounds, this coffee filter will ensure that your coffee is made smooth and delicious. The Bunn coffee filters come in a case of 1,000 filters. Bunn filters are produced using an elemental chlorine-free (ECF) bleaching method. Made in USA