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Aqua Sky, inc. Since 1996



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Buy RO classic 3 Stage Watershield 50 gpd Replacement Filters - Set Of 3 Reverse Osmosis Cartridges for the older model with 10" filters which are two vertical filters and 1 RO membrane horizontal on the top, the newer Watershield systems use three vertical filters next to each other, one of them contains the RO membrane and it's 11" long complete set of organic cellulose reverse osmosis water system replacement filters, Watershield Classic under sink 3 stage systems replacement filters, it includes two pre-filters and a membrane that must be replaced periodically. The filters represent the different stages the water goes through while being purified. Generally, Pre - Filters and Post-Filters in RO systems can last around 8 To 12 months between changes. Only the Organic RO membranes can last as long as 5 years.


Stages - 1 and 2

( carbon block filter)This unique filter can do the job of a Sediment filter. Carbon filter 2-in-1 carbon block filters are well-known for their highly efficient reduction of chlorine taste, odor taste, and odors of many organic chemicals and volatile organic compounds. All carbon filters are made with Organic, high-quality coconut shell carbon.


  • Micron rating: 5 Micron.
  • Dimensions: ( 9 7/8") x 2.5 "
  • Lifetime: Replace yearly, depending on the water quality.
  • This filter is wrapped and sealed and meets NSF Standards and Regulations.
  • The filter will fit any residential reverse osmosis unit with standard 10" filter housing.

Stage - 3

Organic reverse osmosis membrane 50 Gallon per day NSF certified Thin film TFC membrane is the main component of Watershield Reverse osmosis unit.


They are made with 100% Organic fine thin film flat sheet—99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.


Only the organic membrane has the micron rating of a thin film less than 1/10000th of a Micronwhich is 620,000 Times finer than A human hair, 2,500 Times smaller than bacteria, and 20 Times smaller than any virus.


  • Product Features: 50 Gallons per day (15.6 Liters per Hour) capacity.99% Stabilized salt rejection (Minimum Rejection 96%). NSF/ANSI standard 58 listedOperating Conditions Performance specifications based on 500 ppm.

Watershield - Set Of 3 Reverse Osmosis Replacement Filters Cartridges 10" x 2.5"

SKU: 2443112097765490133425231
$119.00 Regular Price
$101.15Sale Price
  • Set Of 3 Organic replacement filters cartridges under sink reverse osmosis water systems ( Watersheld CLASSIC ).

    The 3-stage water system.

    This classic 3-Stage Watershield 50 GPD system uses the following filters:-

    1- Organic coconut shell carbon block pre-filter.

    2- Organic coconut shell carbon block pre-filter.

    3- Organic RO membrane 50-75 GPD with different flow rates.



    • US Water Reverse Osmosis Water Filters.
    • US Water Galaxy Reverse Osmosis Water Filters.
    • US Water Aquapurion Reverse Osmosis Water Filters.
    • Watts 5 stage Reverse Osmosis Water Filters.
    • Purevalue Reverse Osmosis Water Filters.
    • Proline Plus Reverse Osmosis Water Filters.
    • Proline Gold Reverse Osmosis Water Filters.
    • Nelson Reverse Osmosis Water Filters.
    • Isopure Reverse Osmosis Water Filters.
    • iSpring Reverse Osmosis Water Filters.
    • Tier1Reverse Osmosis Water Filters.
    • Hydronix Reverse Osmosis Water Filters.
    • Max Reverse Osmosis Water Filters.
    • AQUARIUM Reverse Osmosis Water Filters.
    • APEC Reverse Osmosis Water Filters.
    • APEX Reverse Osmosis Water Filters.
    • Titan Water Pro Reverse Osmosis Water Filters.
    • Home Pure Reverse Osmosis Water Filters.
    • Premier Reverse Osmosis Water Filters.
    • Blue Wave Water Reverse Osmosis Water Filters.
    • COP and all standard 5 stage RO Systems.
    • 3 stage ro filter replacement kit
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