{"product_id":"un-4stg-ro-filter-kit","title":"Reverse Osmosis Filter Kit - 4-Stage RO System - 50 GPD Rated","description":"• Manufacturer: Watts\u003cbr\u003e• Brands: Watts \/ C-Max \/ Flo-Pro\u003cbr\u003e• Filter Set: 4-Stage Reverse Osmosis Filters \/ Membrane \u003cbr\u003e\u003cbr\u003e\u003cb\u003eThis item includes ONE FILTER Per 4-Stages of the RO System\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003e• \u003cb\u003eSTAGE ONE:\u003c\/b\u003e FPMB5-978 ( Sediment Filter )\u003cbr\u003e• \u003cb\u003eSTAGE TWO:\u003c\/b\u003e MAXETW-975 ( Pre-Carbon Filter )\u003cbr\u003e• \u003cb\u003eSTAGE THREE:\u003c\/b\u003e W-1812-50  ( 50 GPD Membrane )\u003cbr\u003e• \u003cb\u003eSTAGE FOUR:\u003c\/b\u003e AICRO ( 1\/4\" FNPT - GAC Inline Filter )\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eLooking to find replacement filters for your 4-Stage RO System?\u003c\/strong\u003e\u003cbr\u003eReverse Osmosis systems need to have filter replaced to ensure quality of production. We recommend you to replace your filters in a timely fashion, to ensure your system works at peak performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e4 Stage RO Systems Filter \u0026amp; Recommended Replacements Time\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e Stage 1 \u003c\/strong\u003e- Sediment filter, recommended change of 6 months (MAX) The first stage of your RO system is a five micron sediment filter that traps sediment and other particulate matter like dirt, silt and rust which affect the taste and appearance of your water\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e Stage 2 \u003c\/strong\u003e - Carbon Block Filters, recommended change 6 months (MAX) The second stage contains a 5 micron carbon block filter. This helps ensure that chlorine, chloramines and other materials that cause bad taste and odor are greatly reduced. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e Stage 3 \u003c\/strong\u003e - Membrane, recommended to be changed approximately every 2 years. Stage three is the heart of the reverse osmosis system, the RO membrane. This semi-permeable membrane will effectively take out TDS \u0026amp; Sodium and a wide range of contaminants such as Percholate, Chromium, Arsenic, Copper, Lead as well as Cysts, such as Giardia and Cryptosporidium. Because the process of extracting this high quality drinking water takes time, your RO water treatment system is equipped with a storage tank. \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e Stage 4 \u003c\/strong\u003e - Carbon inline filter, recommended to be changed every 6-12 months. The final stage is an inline granular activated carbon (GAC) filter (aka: AICRO) which is used after the water storage tank, and is used as a final polishing filter \u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eThis 4-stage reverse osmosis (RO) replacement filter kit, may also fit:\u003c\/strong\u003e\u003cbr\u003e• Pentek RO-2550 \u003cbr\u003e• Watts W-415 \u003cbr\u003e• Watts F500960 \u003cbr\u003e• Watts GTS450S \u003cbr\u003e• Watts FMRO4G \u003cbr\u003e• Watts Premier 500025 \u003cbr\u003e• Flowmatic FMRO4J \u003cbr\u003e• Nelsen's NRO4-50 \u003cbr\u003e• PuROline PL40T50 \u003cbr\u003e• PureValue 4EZ50 \u003cbr\u003e• Vitapur VRO-4 \u003cbr\u003e• FSHS Inc. PC-438 \u003cbr\u003e• Hydronix RO-450Q-1 \u003cbr\u003e• ...and many more 4-stage under sink reverse osmosis systems\u003c\/p\u003e","brand":"Watts Water","offers":[{"title":"FPMB5-978 - STAGE 1 (Sediment)","offer_id":50419449102616,"sku":"4-Stage-RO-Filter-Kit-01","price":114.71,"currency_code":"USD","in_stock":true},{"title":"MAXETW-975 - STAGE 2 (Pre-Carbon)","offer_id":50419449135384,"sku":"4-Stage-RO-Filter-Kit-02","price":123.59,"currency_code":"USD","in_stock":true},{"title":"W-1812-50 - STAGE 3 (Membrane)","offer_id":50419449168152,"sku":"4-Stage-RO-Filter-Kit-03","price":153.97,"currency_code":"USD","in_stock":true},{"title":"AICRO - STAGE 4 (1\/4\" GAC Inline)","offer_id":50419449200920,"sku":"4-Stage-RO-Filter-Kit-04","price":128.66,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":50419449233688,"sku":"4-Stage-RO-Filter-Kit-05","price":109.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0875\/2257\/4616\/files\/4-stage_ro_kit_1_2nd.png?v=1751302150","url":"https:\/\/supremewatersalv.com\/products\/un-4stg-ro-filter-kit","provider":"Supreme Water Sales","version":"1.0","type":"link"}