The DuPont FilmTec TW30 PRO-4040 is a premium 4" replacement membrane, designed for reverse osmosis (RO) applications requiring high water purity, optimized flow rates, and extended membrane life. Engineered with thin-film composite (TFC) technology, this membrane ensures exceptional salt rejection, superior contaminant removal, and high operational efficiency, making it ideal for industrial, commercial, and municipal water treatment applications. Key Features: ✔️ 4" Diameter – Standard size for mid-capacity reverse osmosis systems✔️ DuPont FilmTec Technology – Industry-leading membrane for high-efficiency water purification✔️ High Salt Rejection – Effectively removes dissolved solids, organics, and contaminants✔️ Thin-Film Composite (TFC) Structure – Enhances durability and ensures consistent filtration performance✔️ Optimized Flow Performance – Maximizes water output while maintaining energy efficiency✔️ Extended Membrane Life (PRO Series) – Designed for long-term operation and reduced maintenance✔️ Industrial & Commercial Applications – Ideal for food and beverage processing, pharmaceuticals, and high-purity water systems✔️ Reliable & Long-Lasting – Built for extended membrane life with minimal maintenance✔️ Easy Replacement & Maintenance – Seamlessly integrates into existing RO systems The DuPont FilmTec TW30 PRO-4040 4" replacement membrane is the ideal solution for high-efficiency water treatment, offering exceptional contaminant removal, long-term reliability, and optimized performance in industrial and commercial settings.