---
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: "₨6968"
currency: SCR
in_stock: true
reviews_count: 2
category: "Greatwell"
url: https://www.desertcart.sc/products/81174370-mro400-high-capacity-400gpd-ro-membrane-replacement-400-gpd-tankless
store_origin: SC
region: Seychelles
---

# 400 GPD ultra-fast filtration 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:** ₨6968
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with the powerhouse membrane that keeps your water—and life—pure and efficient.

## 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?** ₨6968 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/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 Simplicity:** Effortless membrane replacement keeps your system running flawlessly with zero hassle.
- • **Eco-Smart Efficiency:** Optimized 1.5:1 pure-to-drain ratio minimizes water waste while maximizing output.
- • **Rapid Hydration Power:** Delivers up to 40 oz of purified water per minute—stay refreshed without the wait.
- • **Ultimate Purity Shield:** Eliminates over 1,000 contaminants including lead, fluoride, and arsenic for peace of mind.
- • **Long-Lasting Performance:** Durable membrane designed to provide up to 3 years of premium filtration—set it and forget it.

## Overview

The GREATWELL MRO400 is a high-capacity 400 GPD reverse osmosis membrane replacement designed for the Greatwell ROG400 system. Engineered by GE, it delivers rapid filtration with a 1.5:1 pure-to-drain ratio, removing up to 99% of over 1,000 harmful contaminants. Its snap-on design ensures easy installation, and its durable build supports up to 3 years of reliable, eco-efficient water purification.

## 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.

Review: The best filters. Best customer service. - Wonderful customer service. Great product.
Review: Filter Life - I have owned this unit for four years now. The smaller filters last a year, the RO Filter lasted 2 years. Heavy use, water for coffee and Tea, cooking, Dogs and Chickens!

## 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 |
| Batteries required | No |
| Best Sellers Rank | #441,548 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,913 in Replacement Under-Sink Water Filters |
| Customer Reviews | 4.8 4.8 out of 5 stars (15) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.39 pounds |
| Item model number | MRO400 |
| Package Dimensions | 13.19 x 8.15 x 7.01 inches |

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best filters. Best customer service.
*by L***. on March 27, 2024*

Wonderful customer service. Great product.

### ⭐⭐⭐⭐ Filter Life
*by Z***K on February 20, 2025*

I have owned this unit for four years now. The smaller filters last a year, the RO Filter lasted 2 years. Heavy use, water for coffee and Tea, cooking, Dogs and Chickens!

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

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-19*