Coffee Filters Paper Filter for System III 15.13 Diameter. High quality, heavy-weight paper so the water flows properly through coffee grounds Regular Paper Filter 9.75" Diameter. High quality, heavy-weight paper so the water flows properly through coffee grounds. Tea & Coffee Paper Filter 13.75" Diameter. High quality, heavy-weight paper so the water flows properly through coffee grounds Urn and Ice Coffee Paper Filters Choose from two different sizes. High quality, heavy-weight paper so the water flows properly through coffee grounds. © 2018 Guelph Paper & Cleaning Supply Co. Ltd.