Universal 10" x 2.5" reverse osmosis pre-filter replacement cartridges with a 10" x 2" Post inline carbon filter and a standard 1.8" x 12" reverse osmosis membrane. Fits almost standard sized 5 or 6 stage reverse osmosis systems. Includes Ispring, Watts, Premier, Flowmatic, PuROLine, Crystal Quest, Puromax and more brands. This filter set includes: (x2) 5 Micron coconut shell carbon block filter (x1) 50 GPD Reverse Osmosis membrane CARBON BLOCK FILTER IPW Industries Inc carbon blocks are manufactured with a high purity Coconut Shell Activated Carbon. Our acid washed carbon blocks activate the carbon to make it more porous and able to remove more contaminants than standard water washed carbon. With a high chlorine reduction, great dirt-holding capacity, and greatly reduced carbon fines, you will soon make our Carbon Blocks your preferred choice! REVERSE OSMOSIS MEMBRANE 50 GPD RO Membrane - Standard 1.8" x 11.75" Dimensions Additional Details ------------------------------ Bullet point: 💧 PURE AND HEALTHY WATER: Upgrade your home's water filtration system with our Reverse Osmosis Replacement Filter Kit. Say goodbye to impurities and enjoy a healthier drinking experience. Product description: Universal 10" x 2.5" reverse osmosis pre-filter replacement cartridges with a 10" x 2" Post inline carbon filter and a standard 1.8" x 12" reverse osmosis membrane. Fits almost standard sized 5 or 6 stage reverse osmosis systems. Includes Ispring, Watts, Premier, Flowmatic, PuROLine, Crystal Quest, Puromax and more brands. This filter set includes: (x2) 5 Micron coconut shell carbon block filter (x1) 50 GPD Reverse Osmosis membrane CARBON BLOCK FILTER IPW Industries Inc carbon blocks are manufactured with a high purity Coconut Shell Activated Carbon. Our acid washed carbon blocks activate the carbon to make it more porous and able to remove more contaminants than standard water washed carbon. With a high chlorine reduction, great dirt-holding capacity, and greatly reduced carbon fines, you will soon make our Carbon Blocks your preferred choice! REVERSE OSMOSIS MEMBRANE 50 GPD RO Membrane - Standard 1.8" x 11.75" Dimensions