• String-wound design reduces fine sediment from a variety of fluids • Withstands temperatures up to 165° F (73.9° C) • Economically priced CW and WP Series cartridges are 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. CW cartridges are very economical and wound in a standar