---
product_id: 233457265
title: "ULP21-4021 Commercial 21\" Inch Reverse Osmosis RO Membrane Low Pressure"
brand: "vontron"
price: "A$495"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/233457265-ulp21-4021-commercial-21-inch-reverse-osmosis-ro-membrane-low
store_origin: AU
region: Australia
---

# Ultra low operating pressure 950 GPD output 99% rejection rate ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure

**Brand:** vontron
**Price:** A$495
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water game with ultra-efficient purity!

## Quick Answers

- **What is this?** ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure by vontron
- **How much does it cost?** A$495 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/233457265-ulp21-4021-commercial-21-inch-reverse-osmosis-ro-membrane-low)

## Best For

- vontron enthusiasts

## Why This Product

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

## Key Features

- • **Robust Durability:** Engineered to withstand pressures up to 600psi and temperatures up to 45°C, built for long-lasting reliability.
- • **High-Capacity Flow:** Delivers an impressive 950 gallons of purified water daily—perfect for commercial scale needs.
- • **Elite Purity Standard:** Achieves up to 99% contaminant rejection, ensuring crystal-clear water for your most demanding applications.
- • **Versatile Application:** Optimized for window cleaning and aquatic environments, making it a must-have for professional maintenance teams.
- • **Energy-Smart Operation:** Runs at just two-thirds the pressure of standard membranes, cutting energy use without sacrificing performance.

## Overview

The Vontron ULP21-4021 is a 21-inch commercial reverse osmosis membrane designed for ultra-low pressure operation, producing up to 950 gallons of high-purity water daily with a 99% rejection rate. Ideal for window cleaning and aquatic uses, it combines energy efficiency with robust durability to meet professional demands.

## Description

ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure

## Features

- You are purchasing a Vontron ULP21-4021 21inch Commercial Reverse Osmosis RO Membrane.
- This membrane is capable of producing 950 gallons of product water per day, and is ideal for Window Cleaning applications, along with Aquatics.
- Working under the conditions of ultra low operating pressure, this membrane runs under approximately two thirds pressure of that regular low pressure compound membranes, and can achieve a rejection rate of as high as 99%.
- Please see detailed manufacturers specification below:

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item model number | ULP21-4021 |
| Number of Items | 1 |
| Quantity | 1 |

## Product Details

- **Material:** Plastic
- **Product benefits:** Efficient and cost-effective water filtration
- **Brand:** Vontron
- **Unit count:** 1.00 count
- **Number of items:** 1

## Images

![ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure - Image 1](https://m.media-amazon.com/images/I/51u-J6OyttL._AC_UL320_.jpg)
![ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure - Image 2](https://m.media-amazon.com/images/I/51u-J6OyttL._AC_UL480_FMwebp_QL65_.jpg)
![ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure - Image 3](https://m.media-amazon.com/images/I/51u-J6OyttL._AC_UL640_FMwebp_QL65_.jpg)
![ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure - Image 4](https://m.media-amazon.com/images/I/51u-J6OyttL._AC_UL800_FMwebp_QL65_.jpg)
![ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure - Image 5](https://m.media-amazon.com/images/I/51u-J6OyttL._AC_UL960_FMwebp_QL65_.jpg)

## Frequently Bought Together

- Vontron ULP21-4021 Commercial 21" Inch Reverse Osmosis RO Membrane Low Pressure
- iSpring T32M Pressurized Water Storage Tank with Ball Valve for Reverse Osmosis RO Systems, 4 Gallon, 1/4" Tank Valve Included
- Pack of 4 Reverse Osmosis Water Filters

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**Shop now:** [https://www.desertcart.com.au/products/233457265-ulp21-4021-commercial-21-inch-reverse-osmosis-ro-membrane-low](https://www.desertcart.com.au/products/233457265-ulp21-4021-commercial-21-inch-reverse-osmosis-ro-membrane-low)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-15*