Additional Details ------------------------------ Product description: This GE Standard Size Reverse Osmosis Membrane TFM-24 fits in a standard membrane housing. The same standard membrane can accommodate RO membranes with capacities ranging between 18-100 gallons per day (GPD). Average NaCl Rejection: 98% Permeate Flow @ 65 PSI 24 GPD Specifications are based on 500 mg/L NaCl solution at 65 psi net pressure (4.1 bar), 77F (25C), 15% recovery after 24 hours. Individual element flux may vary 15%. If you would like to change your membrane to a capacity other than what was originally in your Reverse Osmosis System, you must change the drain flow control also. The membrane and drain flow restrictor are sized to go together. ---Pre filter Class 1 Chlorine, Taste Odor Reduction Made with Premium Quality Coconut Shell Activated Carbon 5 Micron Filtration No Release of Carbon Fines Fits all Standard 10" Filter Housings, Reverse Osmosis Systems (including all H2O Filter Warehouse, Watts, Pentek Hydrotech) and Under Sink Systems 5,000 Gallon capacity @ 1 PPM Chlorine with 98% chlorine removal at end of cartridge life. Flow rate: 1 GPM Cartridge is designed for use in Under Sink Filtration Reverse Osmosis Applications, but not for whole house applications. NSF Certified under manufacturer's part # CBC-1010AAC. ---Post filter Class 1 Chlorine, Taste Odor Reduction Made with Premium Quality Coconut Shell Activated Carbon 1 Micron Filtration No Release of Carbon Fines Fits all Standard 10" Filter Housings, Reverse Osmosis Systems (including all H2O Filter Warehouse, Watts, Pentek Hydrotech) and Under Sink Systems 5,000 Gallon capacity @ 1 PPM Chlorine with 98% chlorine removal at end of cartridge life. Flow rate: 1 GPM Cartridge is designed for use in Under Sink Filtration Reverse Osmosis Applications, but not for whole house applications. NSF Certified under manufacturer's part # CBC-1010AAC.