Detailed Description: 3 x New Refillable Inline Mixed Bed De ionization Filter (Double Ended) Our Deionization Resin used to produce 99.99% pure water, convenient post RO filtration DI unit (RO/DI unit) provides crucial supplemental filtration to remove most impurities for pure polished product water. Excellent in areas with hard water. It will give you 0 ppm TDS, Conductivity attainable less than 0.1uS/cm or resistivity of close to 18MO. Specification: Clear Housing, Refillable Cartridge (Double Ended) Filter Media: Mixed Bed ion exchange resin Max Flow: 0.5 GPM Max Pressure: 125 PSI Max Temperature: 100°F Dimensions: 11 inch x 2 inch Inlet/Outlet: 1/4 inch FPT Weight: 13 oz Required Hardware (not included in this listing) Clamps 2 inch x 2.5 inch to attach the filter on top you your system membrane housing, Part # 105104 Elbow fittings 1/4 inch tube x 1/4 inch MIP, Part # 105407