A box of 100 12-inch pre-folded square filters for the 6-cup Chemex.
Chemex filters are renowned and unique for the way they utilize folded paper. The filters are one large sheet, either circular or square, and then folded in fours and placed into the brewer. The user then opens up the filter so that one side has three layers and the other one. This extra "padding", so to speak, creates an extra thick layer that further removes oils, slows the brew slightly, and results in the clean, crisp coffee brews that the Chemex is known for.