Customer reviews from filtrete.com
Filtrete - 16 in. W X 20 in. H X 4 in. D Polypropylene 1550 MPR Pleated Air Filter 1 pk
Average customer rating
4.8
(165 Reviews)
Rating breakdown 165 reviews
5 Stars
151
4 Stars
4
3 Stars
1
2 Stars
1
1 Star
8
98%of customers recommend this product.
(
147 out of
150)
Customer Reviews for Filtrete - 16 in. W X 20 in. H X 4 in. D Polypropylene 1550 MPR Pleated Air Filter 1 pk
Customer Rating
1
Filter width changed without proper labeling
on August 10, 2025
Posted by: HonestFeedback
[This review was collected as part of a promotion.] I have been purchasing 16x25x4 filters for years. 3M recently changed the filter design (thick paper stock casing has no diagonal elements) but also the width. As a result the filter width is 1 centimeter too narrow and thus leaves a gap through which unfiltered air can go into the blower.
My observations are consistent with what another user's review from early August 2025 is describing, and their photos clearly show the difference in width between the previous and new designs of the filter.
At the very least you should indicate clearly on the label that the filter is narrower than previously. I know you made 2 versions of a 16x25x4 in the past (regular and slim; the regular version fits my furnace). Are you now only making narrow versions?
My observations are consistent with what another user's review from early August 2025 is describing, and their photos clearly show the difference in width between the previous and new designs of the filter.
At the very least you should indicate clearly on the label that the filter is narrower than previously. I know you made 2 versions of a 16x25x4 in the past (regular and slim; the regular version fits my furnace). Are you now only making narrow versions?
Response from filtrete.comBy 3M-Filtrete Care Team, 3M-Filtrete, August 12, 2025
Hello, thank you for taking the time to leave your review. Your feedback is very important to us, and we will be sure to forward your comments. If you have any additional feedback or questions, please feel free to reach out to our team at 1-800-388-3458 Mo-Fri 8am-4:30pm CT.
Written by a customer while visiting filtrete.com
Customer Rating
5
Best ever
on May 19, 2025
Posted by: lisaramona816_1618
[This review was collected as part of a promotion.] My go to ! Super easy to put in, best preforming and doesn't fall apart! Works well with our unit! Makes our maintenance super easy my 8 years can do it !
Written by a customer while visiting filtrete.com
Customer Rating
1
16x20x4 does not fit Honeywell / Lennox filter box
on March 4, 2025
Posted by: Sergey K
Buyers beware: The actual size of the 16x20x4 was reduced at some point last couple of years. As the result it doesn't properly fit in Honeywell / Lennox filter boxes, despite the advertisement on the packaging.
The filter size used to be 15-7/8" x 19-7/8" x 4-5/16". The new filter size is 15-7/16" x 19-3/4" x 4-5/16", so it is 7/16" (1 cm) narrower than the old filter.
The filter size used to be 15-7/8" x 19-7/8" x 4-5/16". The new filter size is 15-7/16" x 19-3/4" x 4-5/16", so it is 7/16" (1 cm) narrower than the old filter.
Response from filtrete.comBy 3M-Filtrete Care Team, 3M-Filtrete, March 8, 2025
Hello, thank you for taking the time to leave your review. Your feedback is very important to us, and we will be sure to forward your comments. If you have any additional feedback or questions, please feel free to reach out to our team at 1-800-388-3458 Mo-Fri 8am-4:30pm CT.
Written by a customer while visiting filtrete.com
Customer Rating
5
Best Filter for Us
on January 21, 2024
Posted by: MABr
This is the only product I purchase for our furnace. I particularly like that it only requires changing once a year. When we changed ours for 2024 we discovered that it could have remained in place longer.
Written by a customer while visiting filtrete.com
Customer Rating
5
Best Filters
on January 13, 2024
Posted by: Mary B
This is the only air filter we purchase for our current home. Our old home required the thinner filters, but all are always Filtrete.
Written by a customer while visiting filtrete.com
Customer Rating
1
Undersized. Not of advertised value.
on July 31, 2023
Posted by: Slim Fit
Product size states 20x25x4. Inconspicuously designated as slim fit. Actual size is 19.5x24.5x3.25.
This is new. I have purchased this product for many years. This is the first time I have encountered this.
This is new. I have purchased this product for many years. This is the first time I have encountered this.
Response from filtrete.comBy 3M-Filtrete, 3M-Filtrete Care Team, August 2, 2023
Hello, thank you for taking the time to leave your review. Your experience is not what we would expect, and we would appreciate the opportunity to discuss this with you and gather further details. Please connect with our team at 1-800-388-3458 Mo-Fri 8am-4:30pm CT. Thanks again, and we look forward to your call.
Written by a customer while visiting filtrete.com
Customer Rating
1
4 in filter too wide
on June 29, 2023
Posted by: Joe A
I purchased this based on the recommendation of my HVAC installer. The filter is TOO WIDE to fit in the AC. The 4 in filter is wider than the "same size" 1 in filter. Are there any narrower options as opposed to slim options i.e thinner.
Response from filtrete.comBy 3M, 3M Care Team, June 30, 2023
Thank you for leaving your review. We are sorry to hear this and would not have expected the product to be as described. If you need any further assistance, please connect with us directly at 1-800-388-3458 Monday-Friday 8:00am-4:30pm CT.
Written by a customer while visiting filtrete.com
Customer Rating
5
Great Filter......and once a year!
on April 28, 2023
Posted by: TosaTim74
After my electronic air filter system failed, I decided to to try the Filtrete Air Filter. (1550, 4"). I have been using it for the last four years. It seems to work every bit as as well as the expensive electronic system. I thought we would notice more dust in the house, but that is not the case!!
Written by a customer while visiting filtrete.com