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  • How are reviewers describing this item?
    fit, great, perfect, good and size.
  • Our engine has profiled the reviewer patterns and has determined that there may be deception involved.
  • Our engine has determined that the review content quality is low.
  • Our engine has analyzed and discovered that 79.5% of the reviews are reliable.
  • This product had a total of 339 reviews as of our last analysis date on Oct 4 2019.


Most positive reviewquestion

Great filters will buy again

Least positive reviewquestion

Product arrived damaged

Most authentic reviewquestion

It does work very wellm

Least authentic reviewquestion

Great Product

Helpful Insights


    Posted by a reviewer on Amazon

    Looks substantial, but the tested rating is what counts.

    Posted by a reviewer on Amazon

    The one improvement would be stamped tabs on one side of the filter that could be folded out to pull the filter from the filter compartment.

    Posted by a reviewer on Amazon

    The ones i got from home depot didn't fit.

    Posted by a reviewer on Amazon

    The measurements on the home depot brand made by 3m of all companies, was too large.

    Posted by a reviewer on Amazon

    None of the local stores carried an actual 20x20x4.

    Posted by a reviewer on Amazon

    Beware because they carried plenty that were marked as such but were actually for 20x20x5.

    Posted by a reviewer on Amazon

    My only complaint, is that it was supposed to be 2 day shipping.

Review Count History
Price History