Original manufacturer option
iSpring F6K75 six-stage alkaline replacement set, including membrane
Filter F6K75
Your search matches the manufacturer’s listed filter identifier.
Before you buy
This package includes six different stages, including a membrane and alkaline cartridge. We have identified the exact package, but have not confirmed it for your installed system. Check its model before buying. No UV lamp is included; you may not need every stage today.
Why this filter
What’s included
Includes one each of FP15 sediment, FG15 granular-carbon, FC15 carbon-block, MC7 membrane, FT15 final-carbon and FA15 alkaline cartridges.
How this compares
This is a checked replacement, not a Best Overall or Best Value winner yet. Before choosing a winner, we need other filters we can trust, a fair comparison of how they work and how reliable they are, and current prices including shipping.
Filtration tests and details
These records explain which filter results we have checked and what their limits are. The same certification name does not mean two filters work equally well.
What we have verified about filtration
We have not yet verified the exact model's health-related contaminant reductions against a current independent certification listing. Manufacturer claims alone do not establish that this filters better than another option.
View sources
These sources explain the fit, features and filter test results described above. They are not retailer price checks.
Installation and care
Caring for the filters
The package is marketed as a six-month supply, not a guarantee that every cartridge lasts six months or needs changing together. Follow your system’s schedule for each stage.
Where to buy
We haven’t confirmed a current price and availability for this filter. Shopping comparisons are not available yet.