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Aerostar 21x21x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 20.875"...

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Pros & Cons

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Pros

Recommend product & seller. Great bc it allows great air flow and is a metc 11, so it catches everything. My ac system is 6 years old and my coils still look brand new.

Cons

These filters are poorly made junk. The filter is about 1/2” too short in both length and width. The product is actually 1 inch too small.

Fine particles can still get through the filter simply by sneaking by the left or right sides inside the cardboard shell. The cardboard shell itself is also very thin and appears less durable than the shell of name brand filters. And they were glued i... Read More

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Highlights

The AI used to provide these results are constantly improving. These results might change.

Quality

Perfect fit for ac with great construction to catch all that dust and pet hair,

Good fit for my ac unit and much better filter than what the apartment complex offers

A/c unit says 20x20x1 but it was leaving a 1 inch gap through which the air was passing unfiltered.

We change the filter every other month and we feel could run another month.

Price

Work great, good as price as any

This was the best value i found when i purchased.

A bit pricey only 6 in the box.

Reasonable price for a decent quality filter.

Shipping

Items came fast and were well packaged and work as described and were perfect size would order from this company again.

Filters arrive the next day and wall-a.

Competitiveness

A few years ago, i started paying better attention to my hvac system and switched to aerostar 16x25x1 merv 11 pleated ac furnac... Read More

Overview

How are reviewers describing this item?
fit, good, damaged, great and size.

Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.

Our engine has detected that there may be counterfeit products sold through this listing.

Our engine has discovered that over 90% high quality reviews are present.

This product had a total of 29,827 reviews as of our last analysis date on Jun 9 2024.