The FI-SED20-BB are reusable and washable pleated sediment filter cartridges designed to reduce dirt, sand, silt, scale and rust particles. Rated to 30 microns, these sediment filters can treat water with high flow rates and low pressure drops. On top of that, their unique design offers exceptional dirt holding capacity for all whole house applications. Maximum dirt-holding capacity to reduce sand, dirt & rust particles Versatile and suitable for residential, commercial and industrial usage Reusable and washable design extends cartridge life Durable polyester media is bacteria and chemical resistant 30 micron size with options in 20" and 10" cartridges NSF standard 42 certified filter