Check the listing for details. TFC 25 GPD Membrane Set S1227RS RO Replacement. Color: White, Condition: New. Listed at 65.00 USD. Experience the purity of your drinking water with the TFC 25 GPD Membrane Set S1227RS, a top-quality replacement part by Acqua Primo. Designed for compatibility with Hellen Brand systems, this set includes four white polyvinyl chloride (PVC) membranes, each with a lifespan of 36 months. Tailored for under-sink installation, these membranes ensure a continuous supply of clean, sediment-free water, perfect for daily consumption and cooking. The Rain Soft model employs a carbon block filtration method, known for its effectiveness in removing contaminants and impurities. With the convenience of a 4-pack, maintaining your water filter system is effortless, ensuring a reliable and long-lasting solution for your family's hydration needs.