Pentair GRO Encapsulated Replacement Reverse Osmosis Membrane with Check Valve - 1:1 Ratio Production Rate:50 GPD If your primary concern is

If your primary concern is iron and sulfur smell rather than heavy metals or chlorine alone

This cartridge is commonly used in whole-house water filtration systems

Transmittance

5" diameter x 20" length Housing Compatibility Big Blue 20" (4

Not for potable drinking water applications—use as a pre-filter or equipment protector only

Pentair GRO Encapsulated Replacement Reverse Osmosis Membrane with Check Valve - 1:1 Ratio Production Rate:50 GPD If your primary concern isPentair GRO Series Encapsulated Replacement Reverse Osmosis Membrane with Check Valve 1: 1 Ratio High efficiency TLC membrane with integrated housing and check valve, delivering near 1: 1 waste to pure water ratio for residential reverse osmosis systems TLC Membrane Technology Quick Connect Fittings 2 5 Year Lifespan WHY IT WORKS Pentair's TLC thin layer composite technology in a pre fitted encapsulated housing Near 1: 1 Water Efficiency Unlike