Watts FM-50-975 10″ filter is made from pleated polyester media. Cleanable and reusable. Standard length fits most standard 10″ filter housings. Ideal as a first stage point-of-entry (POE) pre-filter to remove larger sized sediment particles (50 micron filter). Increases life of 0.5 to 10 micron carbon block point-of-use (POU) filters. Size information: 2-1/2″ x 9-3/4″.