Protect Your Home’s Water: The Hydrotech Compatible 33001068 reverse osmosis (ro) membrane is the most important component in your ro system and provides ultra-fine filtration. This membrane which is made in the usa forces pressurized water through a thin film composite media to greatly reduce the total dissolved solids and inorganic contaminants in the water. Does your water have a poor taste or appears cloudy? Replace the filter membrane and enjoy cleaner, healthier, and better tasting drinking water. Compatible Hydrotech Reverse Osmosis 25 GPD Membrane With Compatible Filters Set Fits Hydrotech RO systems: HT101 Series (10105, 10106 & 10107), HT102 Series (10204, 10205, 10206 & 10207), HT123 Series (12301, 12302 & 12303), F-HT-9, F-HTF-9, 1240 Series E, M & Pro Systems. Replacement Membrane for HT and HTF Series. Includes: 1 Compatible Hydrotech Model # 33001068 Membrane 25 GPD, 2 Compatible Hydrotech Model # 41400009 S-FS-19 Carbon Block (Pre & Post Filters), and 1 Compatible Hydrotech Model # 41400008 S-FS-02 Sediment PreFilter.