Watts-(W-4021-TW) Membrane for Commercial Reverse Osmosis Systems, 4 IN x 21 IN, Tape Wrapped, Standard Element, 800 GPD Relton (GRT-8-6) Groo-V Tip Multi-Purpose 1/2" Serrated Edge Carbide Drill Bit } Whole House Filtration

} Whole House Filtration

or traditional Greensand media

engineered for residential installations that demand commercial-level output

ensuring your water quality measurements remain accurate and trustworthy

Watts-(W-4021-TW) Membrane for Commercial Reverse Osmosis Systems, 4 IN x 21 IN, Tape Wrapped, Standard Element, 800 GPD Relton (GRT-8-6) Groo-V Tip Multi-Purpose 1/2" Serrated Edge Carbide Drill Bit } Whole House FiltrationWatts Commercial RO Membrane W 4021 TW Thin Film Composite Membrane 800 GPD capacity, 4" x 21" tape wrapped standard element for commercial reverse osmosis systems 800 GPD rated flow Thin film composite Tape wrapped design Standard element The Watts W 4021 TW is a thin film composite reverse osmosis membrane engineered for commercial applications requiring reliable, high volume water treatment. With an 800 gallons per day production capacity and 125