This Reverse Osmosis Water System Membrane TWD30-1812-50 GPD is the membrane used for all our following five models.
SN101- Basic Model
SN102- Standard Model
SN103- Deluxe Model
SN104- Superior Model
SN105- Premium Model
Stage 4 - Reverse Osmosis Membrane
Reverse Osmosis Membrane Filter squeezes out dissolved substances including radium, lead, arsenic, and many others.