Pack of standard pre-filtering and anti-sediment coiled cartridges, 20 microns, 9-3/4 inch, for standard 9-3/4 or 10-inch filter holder bowls. Designed for installation on hot or cold water systems, these anti-impurity cartridges effectively filter solid particles and fine organic debris. Key benefits of the 9-3/4 inch, 20-micron anti-sediment coiled pre-filtration cartridge pack: - Cost-effective pack, highly rated by customers, long-lasting performance - Durable spool mesh constructionno fiber shedding into water - High resistance to elevated temperatures - Made in Italy, ACS certified - High-quality wound polypropylene material provides efficient pre-filtration of rust, dust, and organic impurities This 20-micron sediment filter coil cartridge is compatible with 9-3/4 and 10-inch filter housings or water purification systems. Ideal for pre-filtration applications, install before water softeners, activated carbon filters, or ultrafiltration membranes. Suitable for treating rainwater used in irrigation, sanitary systems, or laundry. For installation, use a standard single or dual transparent filter housing with brass fittings, 1 or 3/4 inch NPT, sized for 9-3/4 or 10-inch cartridges, available separately. Replacement Recommendation: Replace cartridges at least once per year. For optimal water purification, pair with a downstream filter of finer micron rating (e.g., 1 micron) to capture residual fine particles. Available with express delivery within 24 to 48 hours.