Our eBay Store 5 Stage 4pc Reverse Osmosis RO Water Filter Cartridges, Pre & Post Replacement Set SED UDF CTO GAC – 2.5″ x 10″ 4 pc – Pre and Post Replacement Filters All NSF Certified Water Filters Universal fit for any standard RO systems 1pc 5 micron 2.5″ x 10″ Sediment Pre Filter; 1pc 5 micron 2.5″ x 10″ UDF Pre Filter; 1pc 5 micron 2.5″ x 10″ Carbon Block Pre Filter; 1pc Post Inline Filter (Polish Finishing Filter) GAC 1/4″ NPT ports 100% Compatible with APEC, iSpring, Express Water and many more brands. 4 pcs RO Reverse Osmosis pre filters. All filters are Premium NSF Certified. This set is used as a mid year replacement set (depending on water usage and quality) where a replacement membrane is not needed. Replacement membrane is usually replaced once a year while your pre and post filters can be changed 2-4 times per year (depending on water usage and quality). This universal set s compatible with all major RO Systems with standard size housing. Stage 1 is a 5 micron Polypropylene (Poly Spun) Sediment Filter, Stage 2 is a UDF Coconut Shell Carbon filter, Stage 3 is a 5 micron Coconut Carbon Block filter, Stage 5 is a GAC Polishing Inline filter with 1/4″ NPT Ports. This set is compatible with APEC, iSpring, Express Water, US Water RO Systems, US Water Galaxy, US Water Aquapurion, Watts 5 stage systems, Purevalue, Nelson, Isopure, Tier1, Hydronix, Max Water Systems, AQUARIUM, Titan Water Pro, Home Pure, Premier Water System, Blue Wave, and all standard 5 stage RO Systems. Also Compatible With:, 5EZ50, GTS-550S, NRO05-50, 200-GX-5050, ISO-RO5, GTS-550, Tier1 RO5-WF, RO550-W, W-525, and Many More. Product Details Item Sku RO-4PK Micron Rating 5 Filtration Method Sediment, Carbon Block Filters Sediment, Chlorine Taste & Odor Material Other Outside Diameter 2.5 Port Size Connection Type Color White UPC 693614033337 30 Day Money Back Guarantee! We may use USPS, FedEx, UPS, or local shipping providers for free shipping. ** SELECTED FREE SHIPPING ITEMS ARE ONLY AVAILABLE TO THE CONTIGUOUS LOWER 48 STATES UNLESS OTHERWISE SPECIFIED ** Please choose a shipping method other than Free Shipping if you are shipping outside of the Contiguous Lower 48 States. Shipping can be calculated in the “Shipping and Payments” tab located next to the “Description” tab. We do not offer blind shipping. All orders include a packing slip with item details. Thank you for looking at our eBay listing. Our mission is to offer quality filtration systems and water filters at unbeatable prices. Why order from us? Order Guarantee We offer an awesome no-hassle 30-day money-back guarantee. Free Shipping Free shipping on almost every item. Same Day Processing Orders placed before 11 am PST ship the same day. Logistics We have distribution centers throughout the US to get your item to you as quickly as possible. Customer Service We strive to offer great customer service. If you have any questions before or after placing your order, please feel free to send us a message or give us a call, we are happy to help. Payment We accept the following payment methods Sales Tax By state law, we are required to collect Sales Tax to states that require a tax charge. Returns If you’re not satisfied with your purchase, for any reason, we will be happy to take it back – within our 30-day return policy. Copyright © iFilters.com. All Rights Reserved. Product Photos in this listing are original and property of iFilters. Sellers may NOT copy any part of this listing. Unauthorized use of text or images will be reported and an IP claim will be submitted.