

Pentair
Pentair GRO-50EN Thin Layer Composite Residential RO Membrane (4005459)
The Pentair GRO-50EN (4005459) is a 50 gallon per day encapsulated reverse osmosis (RO) membrane used in many residential and small commercial reverse osmosis systems. It is an exceptionally water-efficient membrane typically offering up to 100% water savings compared to conventional membrane technologies.
$79.99USD, free shipping over $200

At a glance
- 50 gallons of purified water per day
- Designed for residential and small commercial water purification systems
About it
The Pentair GRO-50EN (4005459) is a 50 gallon per day encapsulated reverse osmosis (RO) membrane used in many residential and small commercial reverse osmosis systems. It is an exceptionally water-efficient membrane typically offering up to 100% water savings compared to conventional membrane technologies. It accomplishes this while still offering excellent purification performance. It is a “dry packed” membrane to maximize shelf life.
| Replace every | 30 months |
|---|
Tech specs
- 100% dry membrane
- Free chlorine 0.1 ppm
- pH 4-11
- Maximum pressure 125 PSI (6.90 bar)
- Max Temp 120°F (49°C)
- 50 GPD nominal output
- Drain flow control not included
- Permeate check not included
In the box
- 1 x Pentair GRO-50EN Thin Layer Composite Residential RO Membrane (4005459)
Resources
Reviews
No reviews published yet. Reviews here come only from customers who bought it from us, and our team reads each one before it’s published.
Questions about the Pentair GRO-50EN Thin Layer Composite Residential RO Membrane (4005459)?
Aqua is our AI water specialist. She knows this product, what fits it and whether it suits your water.




