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Built for heavy duty whole house water filtration systems, the Culligan CP5-BBS-D whole house water filter replacement cartridge will significantly reduce sediment, dirt, rust, scale and more for up to 12,000 Gal. Designed to fit Culligan systems that use 9-3/4 in. x 4-1/2 in. cartridges or any brand of system that uses standard 9-3/4 in. x 4-1/2 in. filter cartridges. Keep the cleanest tasting water pouring in every room of your home by ordering the Culligan CP5-BBS-D whole house water filter replacement cartridge online today.