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iSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane

$42.91 ~~$69.99~~

In stock

【1-Year Water Filter Pack】This pack contains individually wrapped high-capacity filters designed for 6-stage RO systems, providing a full year of filtration. The pack includes 9 filters: 2x sediment filters, 2x granular activated carbon filters, 2x carbon block filters, 1x post-carbon filter, and 2x alkaline filters.
【Standard Size RO Filters】iSpring water filter set fits standard housings that require 10” x 2.5” reverse osmosis water filters.
【Efficient Filtration】Experience clean, safe, and good-tasting water every time you turn on the faucetand, providing a wonderful drinking experience for your whole family. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula – even better than most bottled water.
【pH-Balanced Alkaline Water Filter】The alkaline mineral filter produces alkaline water with restored healthy minerals such as natural calcium, magnesium, and potassium ions, which ph-balances the RO water. Length: 10", O. D. = 2.5". This alkaline water filter is a great add-on for under sink water filters or reverse osmosis systems.
【Please Note】This water filter pack does NOT include an RO membrane. Updated FA15 alkaline mineral filters and FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter change. If you have trouble installing the filters, please refer to the user manual or contact us.

Specifications

Material: Polypropylene, Granular Activated Carbon, Carbon Block
Product Dimensions: 2.5"D x 2.5"W x 10"H
Item Weight: 2.7 kg
External Testing Certification: ANSI
Product Benefits: Removes contaminants and restores healthy minerals for better tasting water
Number of Packs: 1
Set Name: 1-Year Water Filter w/AK Set
Global Trade Identification Number: 00662425058518
Unit Count: 1 Count
Number of Items: 1
Included Components: Water filters
Item Type Name: Water Filter

Shipping

Last updated: September 9, 2026

CALVIRELLE currently ships to the 48 contiguous United States and Washington, DC.

We do not currently ship to Alaska, Hawaii, Puerto Rico, other U.S. territories, APO/FPO/DPO addresses, or international destinations.

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Returns & refunds

Last updated: September 9, 2026

At CALVIRELLE, we want you to feel confident about your purchase. We accept eligible returns and exchanges, including returns due to a change of mind, within 30 days after the order is delivered.

1. Return Eligibility

To qualify for a return or exchange, an item must be:

• Unworn and unused
• Unwashed and free from stains, odors, makeup, pet hair, or other signs of wear
• In its original condition
• Returned with all original tags, labels, packaging, and accessories

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