21x21x1 MERV 13 AC Furnace Filters

Marsoni

M251S

$141.54

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

21x21x1 MERV 13 AC Furnace FiltersActual Size: 20 3 4 x 20 3 4 x 3 4 (20. 75 x 20. 75 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, smog and other contaminants. Ideal for customers looking for superior filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 13 is equivalent to MPR 2200 2400 Made in the USA. Nordic Pure MERV 13 Pleated AC Furnace Air

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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I was pleasantly surprised by these. They have a clean, natural wood smell and feel pretty durable. On the first couple uses, they were slightly rough and the edges felt a bit sharp, but that improved noticeably after a few washes. Now they feel much smoother. The size variety is a big plus—I’ve been able to use them for multiple purposes like prepping vegetables, fruits, and even meats. Overall, a solid value for the price, especially if you’re trying to replace plastic items with something more natural.

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Reviewed in the United States on March 20, 2026