It should be a standard whole house Omni filter available at Home Depot
as Omni filters in 6 or 2 or 1.5 microns, fiber, string or carbon wrap.
Also available at Lowes as Whirlpool same specifications.
Don't know about this filter, but I bought filters a couple of years ago
from Need Plumbing Supplies, price was not only good but they arrived at
my house faster than if I had called a plumber - less than a day ;)
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