Culligan Compatible by IPW Industries Inc. CW5-BBS Compatible Heavy Duty Polypropylene Sediment Filter Cartridge for Whole House System 2 Pack of Filters - 5 Micron heavy duty sediment filter cartridge Water filter cartridge, Dimensions: 10-Inch H x 4-1/2-Inch D Polypropylene wound, more effective on well water Reduces sediment, scale, rust, dirt, coarse sand, sand, fine sand, extra fine sand, silt Economical light weight filters for standard 10" housings. IPW Industries Inc sediment filter cartridge's coreless design is an economical solution to pre-filtration for many applications. These are used widely as pre-filtration for RO systems and whole house filtration for high sediment water sources. They are also used in applications such as Ice Machines, Film Processing, Beverage, Coffee, Analytical, Wineries, and many others. Polypropylene Sediment, Multi-layer structure nominal micron rating. Reduces fine sediment, sand, silt, rust and precipitated scale Suitable for Municipal and well water 10" x 2.5" Filter Nominal 5 Micron Filtration