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Universal 4-Stage - 50 GPD - RO Replacement Filters - Standard Filter Kit

Universal 4-Stage Reverse Osmosis System Replacement Filters
Need to replace your filters in your RO System? We've made it simple with our Universal Replacement Kit that use factory OEM replacement filters (Not "Knock-Offs" or Generic Filters)

Kit includes ONE of each of the filters & membrane required to replace filters in your 4-stage RO...it's quick and simple!!

1 x FPMB5-978 ( Sediment - Stage One )
1 x MAXETW-975 ( Carbon Block - Stage Two )
1 x W-1812-50 ( Membrane - 50 gpd - Stage Three )
1 x AICRO ( Post GAC Filter - Stage Four )

Availability: In stock Stocked

Product Details
Looking to find replacement filters for your 4-Stage RO System?
Reverse 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.

4 Stage RO Systems Filter & Recommended Replacements Time

Stage 1 - 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

Stage 2 - 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.

Stage 3 - 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 & 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.

Stage 4 - 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

This 4-stage reverse osmosis (RO) replacement filter kit, may also fit:
• Pentek RO-2550
• Watts W-415
• Watts F500960
• Watts GTS450S
• Watts FMRO4G
• Watts Premier 500025
• Flowmatic FMRO4J
• Nelsen's NRO4-50
• PuROline PL40T50
• PureValue 4EZ50
• Vitapur VRO-4
• FSHS Inc. PC-438
• Hydronix RO-450Q-1
• ...and many more 4-stage under sink reverse osmosis systems
Additional Info
Additional Info
Filter Type Specialty Filters
Membrane GPD 50 GPD
Approx Filter Size / Type 2 in x 10 in
Micron Rating 5 Micron
Filter Improves / Removes No
Brand Watts

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