- Compatible Replacement: This 30 Micron 20 x 4.5 sediment water filter is a replacement for Hydronix SWC-45-2030 and fits most 20 inch water filter housings. - Filtration performance: High capacity string wound polypropylene sediment filter capable of filtration down to 30 microns, reducing sediment, rust, dirt, sand, silt, and corrosion to improve water quality. - 6 Month Filter Life: Depending on water quality, replace your home filter cartridge every 6 months for the average household to ensure optimal performance. - Materials and design: Manufactured with high quality materials and subjected to strict quality assurance testing to ensure reliability. - Practical use scenarios: - In a typical household with municipal water to protect appliances and reduce particulate matter. - In homes with well water to minimize sediment and extend the life of pumps and fixtures. - In RVs or vacation homes using 20 inch filter housings for portable or temporary filtration.