---
product_id: 81174370
title: "MRO400 High Capacity 400GPD RO Membrane Replacement 400 GPD Tankless Reverse Osmosis (RO) Water Filtration System - Stage 2"
brand: "greatwell"
price: "AR$812863"
currency: ARS
in_stock: true
category: "Greatwell"
url: https://www.desertcart.com.ar/products/81174370-mro400-high-capacity-400gpd-ro-membrane-replacement-400-gpd-tankless
store_origin: AR
region: Argentina
---

# 400 GPD ultra-fast flow 1.5:1 pure-to-drain efficiency 99% contaminant removal MRO400 High Capacity 400GPD RO Membrane Replacement 400 GPD Tankless Reverse Osmosis (RO) Water Filtration System - Stage 2

**Brand:** greatwell
**Price:** AR$812863
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with next-level purity and speed!

## Quick Answers

- **What is this?** MRO400 High Capacity 400GPD RO Membrane Replacement 400 GPD Tankless Reverse Osmosis (RO) Water Filtration System - Stage 2 by greatwell
- **How much does it cost?** AR$812863 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/81174370-mro400-high-capacity-400gpd-ro-membrane-replacement-400-gpd-tankless)

## Best For

- greatwell enthusiasts

## Why This Product

- Trusted greatwell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Snap-On Convenience:** Tool-free membrane replacement makes upgrades effortless and mess-free.
- • **Eco-Smart Efficiency:** Optimized 1.5:1 pure-to-drain ratio saves water and reduces waste.
- • **Ultra-Fast Purification:** Delivers up to 40 oz of crystal-clear water per minute—never wait to hydrate.
- • **Long-Lasting Performance:** Reliable filtration that keeps going strong for up to 3 years—less hassle, more purity.
- • **Advanced Contaminant Defense:** Eliminates over 1,000 harmful substances including lead, fluoride, and hormones for peace of mind.

## Overview

The MRO400 is a high-capacity 400 GPD reverse osmosis membrane designed for the Greatwell ROG400 system. Engineered by GE, it delivers rapid water purification with a superior 1.5:1 pure-to-drain ratio, removing up to 99% of over 1,000 contaminants including heavy metals and chemicals. Its durable design ensures up to 3 years of reliable use, while the snap-on feature allows for quick, tool-free replacement.

## Description

The RO membrane of ROG400 is made by GE and rated at 400GPD, which provides up to 40 oz of purified water within a minute, along with a high efficiency 1.5:1 pure-to-drain ratio. It’s a long-living workhorse that removes up to 99% of over 1,000 contaminants including lead, fluoride, arsenic, hormones, asbestos and more for up to 3 years.

## Features

- Fits Greatwell ROG400 RO system.
- Package includes one 400 GPD RO membrane that works efficiently with a 1.5:1 pure to drain ratio.
- It removes up to 99% of over 1,000 contaminants including lead, fluoride, arsenic, hormones, asbestos and more, and lasts for up to 3 years.
- Snap-on RO membrane provides easy filter replacement.
- It is recommended to be replaced every 2 to 3 years depending on the water quality and usage.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07H8XT9GF |
| Best Sellers Rank | #930,657 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5,113 in Replacement Under-Sink Water Filters |
| Brand | GREATWELL |
| Brand Name | GREATWELL |
| Customer Reviews | 4.9 out of 5 stars 17 Reviews |
| Manufacturer Part Number | MRO400 |
| Material | ro |
| Material Type | ro |
| Model Number | MRO400 |
| UPC | 662425096916 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** GREATWELL
- **Material:** ro
- **UPC:** 662425096916
- **Unit Count:** 1.0 Count

## Images

![MRO400 High Capacity 400GPD RO Membrane Replacement 400 GPD Tankless Reverse Osmosis (RO) Water Filtration System - Stage 2 - Image 1](https://m.media-amazon.com/images/I/41vF1u6J25L.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.ar/products/81174370-mro400-high-capacity-400gpd-ro-membrane-replacement-400-gpd-tankless](https://www.desertcart.com.ar/products/81174370-mro400-high-capacity-400gpd-ro-membrane-replacement-400-gpd-tankless)

---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-09-22*