20x34x1 MERV 12 AC Furnace Filters

Marsoni

M251S

$131.94

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

20x34x1 MERV 12 AC Furnace FiltersActual Size: 19 1 2 x 33 1 2 x 3 4 (19. 5 x 33. 5 x 0. 75) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores and other contaminants. Ideal for high efficiency air filtration and will help those with moderate allergies and asthma. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 12 is equivalent to MPR 1500 1900 Made in the USA. Nordic Pure

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Runs much larger than I expected. I am 5’4”& 136 pounds. Usually wear a medium or large in some knit tops. So I need to stitch the side seams in hopes it will fit better. I like the weight and softness of the fabric, but really disappointed in the too large armholes. Unwearable for me until I can sew new side seams.

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Reviewed in the United States on February 11, 2026