Post- carbon inline - coconut shell inline granular carbon Pre/post filter. Quick connection fitting 1/4". up to 2,000 gallons of filtration life capacity. Flow rate 0.75 GPM. Removes chorine, chloramines, bad taste odors, and VOC. 10" standard size. (No glue) spin welded for leak free operation.; membrane element - 50 gpd -the Express Water reverse Osmosis membrane removes potentially harmful chemicals like lead, chromium and nitrates from your drinking water. Total dissolved solids, including many other Unhealthy contaminants are effectively swept away from the water you use. Dimensions: 11.75" x, 1.75" diameter (fits standard 2" ID housings) ; capacity: 50 gallon per day;carbon block cto - the coconut shell carbon block cto removes chlorine, organic chemicals, bad taste and odors. Universal industry standard size of 9.78"Inch by 2.5" inch and is compatible with most industry standard RO filter units. Tested and verified by independent laboratory testing. ;granular activated carbon gac - 5 micron rating coconut shell carbon. Removes chlorine, organic chemicals, bad taste and odors. Universal industry standard size of 9.78"Inch by 2.5" inch and is compatible with most industry standard RO filter units. Tested and verified by independent laboratory testing. ;sediment PP - the 5 micron sediment filter is melt blown with thermally bonded 100 percent Pure polypropylene microfibers. Universal industry standard size of 9.78"Inch by 2.5" inch and is compatible with most industry standard RO filter units. Tested and verified by independent laboratory testing.