The USWF 10" x 2.5" String Wound Sediment Filter has a 20-micron rating, making it ideal for capturing larger sediment particles such as sand, silt, rust, dirt, and scale from your water supply. Its tightly wound polypropylene yarn construction provides graded density filtration, trapping coarse particles on the outer layers and finer particles deeper within the filter. This makes it an excellent pre-filter for well water systems or as a first stage in multi-stage filtration setups.

The USWF 20 Micron String Wound Sediment Filter typically lasts 3 to 6 months, depending on your water quality and usage. Homes with heavy sediment loads or well water may need to replace it more frequently, while households with cleaner municipal water may get closer to 6 months of service life. We recommend replacing the filter sooner if you notice reduced water pressure or visible discoloration on the filter cartridge.

This USWF sediment filter measures 10 inches in length by 2.5 inches in diameter, making it compatible with virtually all standard 10" x 2.5" filter housings. It fits popular whole-house and under-sink systems including those from Pentek, Culligan, Watts, American Plumber, and most generic Big Blue-style standard housings. Always confirm your housing accepts a 10" x 2.5" cartridge before ordering.

The USWF 20 Micron cartridge is constructed from 100% food-grade polypropylene yarn wound around a polypropylene core, containing no adhesives, binders, surfactants, or anti-static agents. The materials used comply with FDA standards under CFR Title 21 for food contact applications, making it safe for potable water filtration. Its all-polypropylene construction also makes it compatible with a wide range of water chemistries, including hot water applications up to 150°F.

String wound filters like the USWF 20 Micron offer graded density filtration, meaning they trap larger particles on the outside and progressively finer particles as water moves inward. This provides higher dirt-holding capacity than spun polypropylene filters at the same micron rating, extending filter life in sediment-heavy applications. They're particularly effective for well water, whole-house pre-filtration, and industrial applications where high sediment loads are common. Unlike pleated filters, string wound cartridges are disposable rather than washable, ensuring consistent filtration performance throughout their service life.