You are viewing our range of 10 inch x 2.5 inch replacement water filter cartridges. These cartridges are known in the water filter industry as 10 x 2.5 inch cartridges. They often measure 25 cms in length (just under 10 inches) and 7.5 cms in diameter (just under 3 inches). Ideal for use in twin under sink, countertop, caravan and reverse osmosis water filter systems. Choose from carbon, ceramic, poly spun and pleated washable filters.