20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon

Marsoni

M251S

$36.99

Get it in 3 business days with 1 day shipping. Friday, May 29

20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus CarbonActual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. If you are replacing a Honeywell or Lennox 20x20x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 20x20x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter

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Been buying these for years. They are relatively cheap and easy to replace, so much better than getting ripped off at the dealer lmao. Compatibility and Installation - 5/5 Filtration Efficiency and Performance - 5/5 Durability and Value for Money - 4/5 - these are made to be replaced, so can't really do much about that!

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Reviewed in the United States on May 17, 2024

Verified Purchase

Brittany

West Palm Beach, US

★★★★★ 5

Perfect

Size: 2.0L

I bought this and was able to change this myself. It was simple. I got this for my 2016 Honda Civic, I don't think I ever replaced the filter in my car in the 5 years that I had it. It had a distinct smell in my car, and once I popped this bad boy in, within a day or two the smell was gone. It did make a sound for a while like I did not do it correctly, but I did, after about a week the sound went away, so everything's good. I will buy this again when the time comes

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Reviewed in the United States on July 16, 2024

Verified Purchase

Bogdan Niculescu

Lake Worth, US

★★★★★ 5

fits well

Size: (Pack of 1)

fit perfectly, easy install, saved a buck and time not going to the mechanics.

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Reviewed in the United States on April 19, 2026