Ipw Industries, Inc.|50 Gpd Reverse Osmosis Water Filter, Inline Filter Product Details [INCLUDES] (x2) 5 Micron Coconut shell carbon blocks, (x2) 100% polypropylene sediment filters, (x1) Reverse Osmosis RO membrane, (x1) inline filter [COMPATIBILITY] The compatible Pentek RO-2550 RO System Replacement Water Filter Kit 50 gpd by IPW Industries Inc. provides a complete one year supply of filters for your Pentek RO-2550 reverse osmosis system. This kit includes all pre and post filters as well as the membrane. [HIGH QUALITY FILTTRATION] 4 - 6 months (depending on the water quality). To ensure you are continuously getting sediment free water, make sure you change your filters regularly [Why IPW Industries Inc] IPW Industries Inc has 17 years of expertise and are members of the Water Quality Association. We stand by our products and service Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.