18x24x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters

18x24x 1/2 Half Inch Ring Panel MERV 8 Furnace Air Filters

Marsoni

M251S

$70.99

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

18x24x 1/2 Half Inch Ring Panel MERV 8 Furnace Air FiltersActual Size: 17 1 2 x 23 1 2 x 1 2 (17. 5 x 23. 5 x 0. 5) Captures large airborne particles like household dust, pet dander, bacteria and pollen. Ideal for customers with apartments, window units, campers, and RVs. Antimicrobial high capacity, polyester material with an added layer of smooth poly blend electrostatic filter media For filter installation the air enters thru the fuzzy, high loft side and exits out the thinner, smooth side. Made in the

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Got this to replace cabin air filter on 2020 Honda Civic Sport, as it said it was a direct fit… It does fit but not perfectly! Holding it next to the filter you can see the size difference, with the original being slightly longer. I noticed a whistling sound from the AC at full blast right after install. I believe this noise is caused by the small gap left in the retainer box with the slightly smaller filter. Luckily it is not incredibly loud, but it’s still there. The quality of filtration seems to be much better than stock filter, but the fitment not exact for vehicles mentioned above.

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Reviewed in the United States on May 17, 2026

Verified Purchase

Bon43

Charlottesville, US

★★★★★ 5

Awesome

Easy to install. Fit appropriately. Value for the money for sure.

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Reviewed in the United States on September 26, 2025