The BUNN BCF100-B 100-Count Coffee and Tea Filters are specially designed to work with BUNN brewers.The selection of coffee filters is a vital step in brewing perfect coffee. BUNN manufactures the best filters from high quality heavy weight paper and are uniquely designed for strength. Preventing overflow and grounds in your coffee they are 1/4-inch taller than other filters to allow for the quick flow of water into the brew funnel and the needed mixing action for complete even extraction. Special paper grade ensures optimum extraction of coffee's tasteOxygen processed for best coffee flavorPerfect for coffee requiring exact brewing such as decaf and flavored coffeesSuperior stay-in-place design prevents coffee grounds overflowDesigned for BUNN brewers and fits most flat-bottom coffee funnels