We do not stock the CQ56-18FC reverse osmosis membrane. Email email@example.com
or call 1-888-801-7873 if you would like to special order the CQ56-18FC. An alternative option is the TQ56-36FC
RO Membrane below. This is a 36 Gallon Per Day Membrane which means it will produce more water per day than the 18 Gallon Per Day Membrane. The TQ56-36FC does not reduce chlorine taste and odor so a chlorine reduction filter such as the Q5633
must be used before the TQ56-36FC RO Membrane. The flow control is included in the membrane so it is seamless to switch between the 18 and 36 GPD reverse osmosis membranes.