- No. 4 cone coffee filters deliver excellent taste. These filters are of moderate thickness and resistant to tearing, and they efficiently remove most coffee oils and all grounds, resulting in a smoother, richer cup with moderate bitterness. - Use tips for best results. If you are using unbleached filters, fold them first and place them in the filter cup. Before brewing, moisten the filter paper with hot water to help it fit the cup more accurately. - Capacity and compatibility. No. 4 cone filters have a capacity of 8-12 cups, making them suitable for most filter cups, hand-pour coffee machines, or Americano machines that require No. 4 coffee filter paper. They are compatible with Ninja filters as well as Drip and Pour Over coffee makers. - Material and sustainability. These filters are made from natural wood pulp, are clean and odor-free, unbleached, and compostable.