Dow FilmTec TW30-1812-50HR 50 GPD High Rejection RO Membrane for Undersink Systems (Replaces TW30-1812-50)

Overview

Experience cleaner-tasting water at home with the Dow FilmTec TW30-1812-50HR High Rejection Reverse Osmosis Membrane. Designed for undersink RO systems, this 50 GPD element blends reliability with consistent performance, helping you enjoy water that feels fresh from the tap. While performance can vary with conditions, the membrane is engineered to deliver solid everyday results under typical household use.

Key specifications

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

Performance and practical use

• Compact size fits standard undersink vessels (1.75 inches by 11.74 inches) and standard 2-inch by 12-inch housings
• Designed for home drinking water improvements with a focus on consistent filtration performance
• Higher rejection capability helps separate impurities, contributing to a crisper water profile when paired with proper pre-filters

Installation notes and care

Note: If your municipal water contains residual chlorine, a carbon/sediment pre-filter is recommended to protect the membrane. Environmental factors can influence actual output, so performance may vary by household conditions.

What you get

• DS-certified FilmTec membrane element
• Compatibility with common undersink RO systems
• Replaces model TW30-1812-50

Whether you are upgrading an existing undersink RO or selecting a replacement element, the TW30-1812-50HR offers a dependable option backed by FilmTec engineering. Consider pairing it with a suitable pre-filter and a well-matched storage or post-filter stage to tailor taste and clarity to your water profile.