60FC is a single pleated drum cartridge replacement filter for the following dust collectors and polishing units – 60FC-TS, 75D-FC, 77 and 101. Each unit has two 60FC drum cartridge filters. Installing is easy. Undo the wing nut that holds the filter in place and remove it carefully. Clean out the internal chamber. Then install the new filter. Make sure the gasket is completely sealed, and there are no gaps.