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Worldwide Free Shipping From The Following Locations
  • (New York U.S.A.) 

  • (California U.S.A.)

  • (Ontario Canada.)

  • (Athlone, Dublin Ireland.)   

  • (Manchester, U.K.)

  • (Dijon, France.)

  • (Nürnberg, Germany.)

  • (Kapfenberg, Austria.)

  • (Alice Springs, Australia.

Order Processing

  • U.S.A, Canada, Europe and Australia free shipping all orders.

  • Orders will be dispatched within one business day after an order has been received.

  • Orders placed on Friday after 3pm (Pacific Time) will begin processing the following Monday.

  • Confirmation email will be sent to customers once the order has been dispatched.

  • Please feel free to contact us for any additional information by email  info@aquaskyusa.com Phone toll free  1(800) 551-3221 

Buy online replacement filters for aquasky ROT-4 under sink reverse osmosis water systems filters , Aquasky ROT-4 under counter sink systems replacement filters for repair , Cervice - include 3-4 filters and a membrane that must be replaced periodically. The different filters represent the different stages that the water goes through while being purified. generally - Pre-Filters in the aquasky ROT-4 and Post-Filters in RO systems can last around 8 To 12 months between changes. RO membranes can last as long as 2 to 3 years!

Aquasky ROT-4 Carbon Filter

$42.00 Regular Price
$35.70Sale Price
  • Stage 2 & 3 Pre-Membrane

    Stage 2 & 3 Are the same - organic ( CTO ) coconut shell carbon block filter

    • forceful remove pesticide residues in water, water pollution odor of ozone, chlorine .
    • Protects and extends the life of the membrane and system.
    • Recommend replace every 8 To 12 months.
    • Standard Size 24-3/4" / 10" 5.5 /15-( 97%)pxi - CVM
    • Tankpro Pro 3.2 & 4.4 Reverse osmosis replacement filter cartridge .
    • Aquasky Rot-4 Reverse osmosis replacement filter cartridge .
    • PA-E Reverse osmosis RO 132 Replacement carbon filter cartridge
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