Aqua Flo 26255 Radial Flow Carbon Replacement Filter Cartridge Similar to Pentek model RFC-BB 155141-43 Ideal for POE (whole house) and other high flow rate applications Unique design reduces carbon fines in filtered water Very low pressure drop, item dimensions: 4.5-inch L x 10-inch H x 4.5-inch W Filter dimensions: 4.5 Inch x 10 Inch