The Aqua-Pure AP110 filter cartridge is made from cellulose fibers which allow the filter to remove fine particles of sediment, dirt, and rust. The Aqua-Pure AP110 filter cartridge removes particles down to the 5 micron level with a flow rate of 8 GPM. The AP110 filter cartridge is ideal for improving the quality of your water and can be used nearly all standard filter housings. Includes 2 filters.