A high quality system that is assembled in the USA and is NSF & WQA Certified! This guarantees the quality of your water. It comes with everything necessary for a standard installation including instructions, faucet and a set of filters. Features & Benefits Five stage treatment for superior performance. 50 GPD membrane (Made in USA). Designer chrome faucet with ceramic disc for greater durability. Genuine John Guest® fittings throughout for optimum security. 3/8” post filter and 3/8” tubing to faucet for greater flow. Assembled in USA. Certified by NSF International (Std. 58) for third party documentation. Certified to NSF / ANSI Std. 58 for Pentavalent Arsenic reduction. One year limited Warranty from date of purchase. Specification Data Membrane: 50 GPD Maximum pressure: 100 psi Minimum pressure: 40 psi Maximum TDS: 2,000 PPM Maximum hardness: 15 GPG Maximum Iron: 0.3 PPM Maximum HS: 0.0 PPM Tubing (tank & faucet): 3/8" Tubing (other): 1/4"