---
product_id: 258795934
title: "Dow FilmTec TW30-1812-100HR 100 GPD High Rejection TFC Replacement Membrane for Undersink Reverse Osmosis (RO) System (New Model Replaces TW30-1812-100)"
brand: "dow filmtec"
price: "₩87971"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/258795934-dow-filmtec-tw30-1812-100hr-100-gpd-high-rejection-tfc
store_origin: KR
region: South Korea
---

# 100 GPD high flow rate Polyamide Thin Film Composite tech NSF/ANSI Standard 58 certified Dow FilmTec TW30-1812-100HR 100 GPD High Rejection TFC Replacement Membrane for Undersink Reverse Osmosis (RO) System (New Model Replaces TW30-1812-100)

**Brand:** dow filmtec
**Price:** ₩87971
**Availability:** ✅ In Stock

## Summary

> 💧 Upgrade your hydration game with the ultimate high-efficiency RO membrane!

## Quick Answers

- **What is this?** Dow FilmTec TW30-1812-100HR 100 GPD High Rejection TFC Replacement Membrane for Undersink Reverse Osmosis (RO) System (New Model Replaces TW30-1812-100) by dow filmtec
- **How much does it cost?** ₩87971 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/258795934-dow-filmtec-tw30-1812-100hr-100-gpd-high-rejection-tfc)

## Best For

- dow filmtec enthusiasts

## Why This Product

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

## Key Features

- • **Ready When You Are:** Shipped dry for extended shelf life and hassle-free installation whenever you need it
- • **Next-Gen Membrane Tech:** Advanced polyamide thin film composite ensures superior contaminant rejection and durability
- • **Purify More, Waste Less:** Delivers 20% more purified water at a lower 50 psi pressure than competitors rated at 60 psi
- • **Certified Clean Confidence:** NSF/ANSI Standard 58 certification guarantees top-tier water safety and reliability
- • **Perfect Fit, Seamless Upgrade:** Designed to replace TW30-1812-100 with exact dimensions for effortless compatibility

## Overview

The Dow FilmTec TW30-1812-100HR is a cutting-edge reverse osmosis membrane designed for undersink systems, delivering 100 gallons per day with 20% more purification efficiency at a lower operating pressure of 50 psi. Made from durable polyamide thin film composite, it is NSF/ANSI Standard 58 certified for safe, reliable home water filtration. Shipped dry for long shelf life, it fits standard 2-inch x 12-inch housings and replaces the previous TW30-1812-100 model seamlessly.

## Description

Dow FilmTec TW30-1812-100HR 100 GPD High Rejection TFC Replacement Membrane for Undersink Reverse Osmosis (RO) System (New Model Replaces TW30-1812-100)

## Features

- Polyamide Thin Film Composite (TFC)
- Rated at 50 psi and purifies about 20% more water than elements rated at 60 psi
- Shipped dry for convenient and a long shelf life
- Free Chlorine Tolerance: <0.1 ppm
- Dow genuine membrane element, NSF/ANSI Standard 58 certified

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Dow Filmtec |
| Model Number | 43208-915 |
| Product Dimensions | 4.45 x 29.82 x 4.45 cm; 99.79 g |
| Material | polyamide thin film composite |
| Item Weight | 99.8 g |

## Product Details

- **Material:** polyamide thin film composite
- **Product dimensions:** 4.4D x 29.8W x 4.4H centimeters
- **Item weight:** 100 g
- **External testing certification:** NSF
- **Product benefits:** Removes Impurities

## Images

![Dow FilmTec TW30-1812-100HR 100 GPD High Rejection TFC Replacement Membrane for Undersink Reverse Osmosis (RO) System (New Model Replaces TW30-1812-100) - Image 1](https://m.media-amazon.com/images/I/41v1t4ePBfL.jpg)

## Questions & Answers

**Q: Where is it manufactured?**
A: This is made in USA, Dow Filmtec geneuine membrane as it is stated on the product.

**Q: Is there a manufacturing date code on product or on package? As to gauge shelf life.**
A: Every membrane comes with manufacturer’s serial number and authentication code, so you may check with manufacturer Dow Filmtec. However, our membranes directly comes from the factory to Amazon FBA without waiting in stock. Usual shelf life is about 3 years when the membrane was kept in good conditions based on manufacturer’s guidelines.

**Q: Can you use apec (flo-700-qc) flow restrictor with this membrane?**
A: Usually 800 flow restrictor is recommended for 100gpd membrane. You may also check with Apec company if that is the manufacturer of your RO system.

**Q: What is the rejection rate in percentage please?**
A: It depends on how new the filter is, type of filtration, and how many filters. I am getting almost 98%

## Frequently Bought Together

- Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System
- APEC Water Systems 5-TCR-QC US MADE 10" Inline Carbon Filter with ¼” Quick Connect For Reverse Osmosis Water Filter System (For Standard System)
- APEC Water Systems ULTIMATE Series US Made Stage 1, 2 & 3 Replacement Filter For Undersink System(FILTER-SET)

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**Shop now:** [https://www.desertcart.kr/products/258795934-dow-filmtec-tw30-1812-100hr-100-gpd-high-rejection-tfc](https://www.desertcart.kr/products/258795934-dow-filmtec-tw30-1812-100hr-100-gpd-high-rejection-tfc)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-09*