Are you looking for a low cost filter for pre-filtering or a special project? The Watts FPMB20-978 replacement filter is a great option for water pre-filtering or if you are working with beverages, fine chemicals, plating solutions and more. Implementing one in your system is easy and cost-effective! The Watts Flo-Pro Replacement Filter Cartridge fits most standard filter housings requiring a 9-7/8-inch x 2-1/2-inch filter. The filter uses Bonded Polypropylene to remove contaminants for up to 6 months. Low cost makes it great for pre-filtration. High dirt-holding capacity means fewer changes. Made with food grade ingredients with no leachable to protect your drinking water or solution. High chemical resistance for a wide array of uses.