Membrane, 25 GPD TFC reverse osmosis membrane - standard size 1.75" X 11.75"
Standard size membrane can be used as a replacement for most TFC model Reverse Osmosis.
Many membranes "cross reference", such as CSM1812-24, CSM1812-25, RMSTD24T, and other similar flow rated membranes ).
This TFC Membrane works on Well or City water supplies.
If you are on chlorinated "city" water, you should use a Carbon Block Prefilter ( like our 10" Carbon Block Matrikx CTO 2 - 5 Micron PN DCS1258 ).