Pentek WP1BB97P Polypropylene String-Wound Sediment filter cartridges reduce fine sediment from a variety of fluids. They have a higher dirt-loading capacity and efficiency than standard wound cartridges. WP1BB97P sediment filter 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. Specifications: Micron Rating : 1 Dimensions: 10" x 4.5" Flow Rate: up to 20 GPM Temperature Range: 40-165 Degrees Fahrenheit Reduces: Sand, Sediment, Dirt, and Rust particles Pressure Drop: 1 psi @ 20 GPM Materials of Construction: Media: Fibrillated Polyester Core: Polypropylene Temperature Rating: 40F to 125F (4.4C to 51.7C)