Warranty 6-Month Money Back Guarantee for manufacturing defects Life-time Free Technical Support Specifications: Model:3012-500 Compliance: NSF/ANSI Standard Rejection Rate:97% Average Permeate: 500 GPD Water Recovery Rate: 15% Replacement Cycle: 15 - 24 months ?recommended? Compatible Membrane Housing: 3012 Housing Note: If you have chlorinated water, we recommend you use a Carbon/Sediment Pre-Filter. The residual chlorine in municipal or city water will destroy the membrane. If hardness is too high, we recommend you install water softener before RO unit. Package 1 * 500GPD Ro membrane 1 * 3012 Ro membrane housing 3 connectors 1 * wrench 3 water pipes