Poly Spun Sediment Filter – 10 Micron Size: 10″ x 2.5″ Standard Size Suitable for all town water usage. Constructed from polypropylene which is spun. There is no centre core to restrict filter performance. These filters are compatible with most liquids & are highly effective for sediment, rust, s&, silt, & algae removal. The filters have no chemical residuals. Carry a heavy load of sediment – Longer Life. We use these filters over others due to high performance, high flow rate, high load capacity, & their inability to grow bacterial slime.