New and Improved as compared to original AP117 design, Up to 30 longer lasting, Patent pending technology provides fine sediment filtration down to 5 micron, Rigid construction helps to eliminate sedimentunloading due to variances in water pressure, Double open ended design allows for filtration regardless of which way it is installed in housing, The unique flow design of this cartridge allows for the use of finer, more effective granular activated carbon which yields a very low pressure drop, Neoprene gaskets on both top and bottom help provide sealing in any housing, helping to prevent bypass of unfiltered water downstream, The APS117 also has scale inhibition, Specifications:, Height: 934 24, 8 cm, Diameter: 212 6, 4 cm, Flow Rate: 3 gpm 11, 4 lpm, Max Water Temp: 100°F 37, 8C, Degree of Filtration: 5 Micron Nominal, SKU: YROW023