---
product_id: 621482957
title: "Max Water Stainless Steel Reverse Osmosis Commercial Membrane Housing 4021"
price: "KSh44067"
currency: KES
in_stock: true
url: https://www.desertcart.co.ke/products/621482957-max-water-stainless-steel-reverse-osmosis-commercial-membrane-housing-4021
store_origin: KE
region: Kenya
---

# Max Water Stainless Steel Reverse Osmosis Commercial Membrane Housing 4021

**Price:** KSh44067
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Max Water Stainless Steel Reverse Osmosis Commercial Membrane Housing 4021
- **How much does it cost?** KSh44067 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/621482957-max-water-stainless-steel-reverse-osmosis-commercial-membrane-housing-4021)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Max WaterStainless Steel Reverse Osmosis Commercial Membrane Housing 4021

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Stainless Steel |
| Product Dimensions | 4"D x 4"W x 21"H |
| External Testing Certification | NSF |
| Product Benefits | Provides superior durability and corrosion resistance for heavy-duty use, versatile application across industries, cost-effective solution with easy installation maintenance. |
| Brand | Max Water |
| UPC | 680392201706 |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Manufacturer | Max Water |
| Part Number | 105885 |
| Item Weight | 6.49 pounds |
| Item model number | 4021 |
| Size | 1 Count (Pack of 1) |
| Color | Housing-4021 |
| Item Package Quantity | 1 |
| Included Components | 4021 Industrial filteration Reverse Osmosis Membranes |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Stainless Steel
- **Product Dimensions:** 4"D x 4"W x 21"H
- **External Testing Certification:** NSF
- **Product Benefits:** Provides superior durability and corrosion resistance for heavy-duty use, versatile application across industries, cost-effective solution with easy installation maintenance.
- **Brand:** Max Water

## Images

![Max Water Stainless Steel Reverse Osmosis Commercial Membrane Housing 4021 - Image 1](https://m.media-amazon.com/images/I/61EWJ8WuvQL.jpg)

## Questions & Answers

**Q: How many GPM does this output?**
A: its 1000 GPD

**Q: Can i use this membrane on a ro system. for by window washing and what is the difference between a 4x21 and a 4x40 membrane?**
A: The 4 x21 is around 21 inches long, the 4 x 40 is around 40 inches long.  This is just the housing, you have to buy a 4 x21 inch RO membrane to go inside the stainless housing and you'll need at least 70 PSI on the feed water to get any decent flow rate from the membrane as anything below 40 PSI won't produce much water.  The flow rate through the membrane is going to be pretty low even at optimum PSI of 90-100.  It will output around a liter a minute in production water along with waste water.

**Q: Hi there! i have an aquabase watermaker unit and it requires a 711205 membrane 4"-21 sw & want to make sure this it the correct part that i need?**
A: No this is not a compatible membrane, our membrane is not made to be used with seawater SW

**Q: Is there away to directly connect male and female 3/4" garden hose maybe by quick push connect? What is the od size of theof both end nipples on membr**
A: This is membrane only and no housing included. Search for the housing 4021 and all the details is listed. Hosting includes 1/2" and 3/4" NPT female ports on each side. No 3/4 Gardon threads and you should buy adaptor 3/4" NPT x 3/4" Gardon, you can find it on Amazon.

## Frequently Bought Together

- Max Water 4021 - Heavy Duty, Stainless Steel - Reverse Osmosis Commercial Membrane Housing 4" x 21"
- Max Water - Heavy Duty - Reverse Osmosis 4040 Membrane Housing - 4" x 40" good for industrial use - 4040 housing

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-03*