21x23 1/2x1 MERV 12 AC Furnace Filters

Marsoni

M251S

$81.01

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

21x23 1/2x1 MERV 12 AC Furnace FiltersActual Size: 20 x 23 1 8 x 3 4 (20 x 23. 13 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 MERV

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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OK. So I spend a lot on (and I mean A LOT) on Amazon and I never write reviews. Just not my thing. But I had to write a review for this product. These brackets are fantastic - attractive, sturdy. But what threw me was the screws - they are SUCH high quality. They don't strip or lose their black color at all even when your drill, set to 0 slip, loses grip repeatedly because you drilled the pilot hole too small and are throwing every ounce of your body weight against it to get it to drive. And they give you extra! Like, enough to mount 8.5 brackets in a 6-bracket box. I am saving alllllll of these extra screws; if I could buy them separate I would. It might seem like a small thing but hardware is usually a place companies skimp on HARD, and to be confronted with such quality was truly a breath of fresh air. The brackets take some mounting expertise to ensure everything is true - lots of measuring and leveling (some minor differences in angle + or - a couple degrees, but they're SOLID. I will be buying these again in the future. Kudos for an awesome product.

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Reviewed in the United States on August 20, 2024

Verified Purchase

Amazon Customer

Draper, US

★★★★★ 5

Sturdy

Style: Black 6 Pack, Size: 5.5 inch

I put them up and forgot about them. Worked perfect, look great.

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Reviewed in the United States on May 23, 2026

Verified Purchase