This filter set includes (x5) 5 Micron, polypropylene string-wound sediment filters Additional Details ------------------------------ Bullet point: Dependable Whole House Water Filtration: Protect your home's water with this whole house water filter, designed to remove dirt, sand, and rust. Featuring a durable polypropylene construction, this string wound sediment filter ensures high performance and longevity. It works seamlessly with Campbell 1SS systems and other setups, making it an ideal whole house water filter cartridge for improving water quality across all household taps.