Pentek WP-5
http://www.waterfilters.net/Pentek-WP5-Water-Filters.html<br />The Pentek WP5 is a 5 micron polypropylene string wound water filter designed to reduces fine sediment from a variety of fluids. The Pentek WP-5 water filter withstands temperatures up to 165° F and is manufactured from a durable polypropylene cord that is wound around a rigid polypropylene core. They are an economical solution to reduce fine sediment, including sand, silt, rust and scale particles.<br />Also known as the Ametek WP5, these water filter cartridges are wound in a precise pattern around the core providing greater surface area. The result is higher dirt-loading capacity and greater efficiency than standard wound cartridges. The WP-5 water filter cartridges are suitable for a wide variety of sediment filtration applications, including municipal and well water as well as many industrial fluids.