13x21 3/4x1 Exact MERV 12 AC Furnace Filters

13x21 3/4x1 Exact MERV 12 AC Furnace Filters

Marsoni

M251S

$67.28

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

13x21 3/4x1 Exact MERV 12 AC Furnace FiltersActual Size: 13 x 21 3 4 x 3 4 (13 x 21. 75 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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These are amazing. I have tried a lot of no show socks and either retired, gave away or threw away. These actually stay up. I’ve worn them with flats and sneakers. They are even comfortable wearing around the house without shoes. I highly recommend these. There are small areas they may show, but it’s not enough to bother me.

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Reviewed in the United States on May 21, 2026

Verified Purchase

Brandon Dang

Birmingham, US

★★★★★ 4

Works well for sockless look, but annoying branding placement

Color: Matte Black, Size: Medium, Color: Matte Black, Size: Medium

The Good: works great as true no show socks for loafers. Gives you that sock-less look that many “invisible/no show socks” don’t provide for loafer type shoes. I really like these socks because it works for that purpose and they don’t slip off. The Bad: I hope Ondo considers my review, because although I love the functionality of the socks and would like to buy more, the only thing that prevents me from buying more is that they put their logo right at the heel of the socks. When I’m driving and look down at my shoes, the ONDO branding is very apparent and it’s quite annoying (I bought the black color socks). I’m not buying more pairs because of this one gripe I have with these socks. Other than that, these socks work well. Just too bad the branding placement of the socks is annoying. Will keep my current pairs but won’t buy more.

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Reviewed in the United States on May 30, 2026

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Geoff N

Phoenix, US

★★★★★ 5

Socks that don’t slide into your shoe!!

Great socks!

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Reviewed in the United States on May 26, 2026

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Mom

Lowell, US

★★★★★ 1

Hole after 3 times wearing them

Color: Cream Beige, Size: Medium

While these fit well and stayed up, after three times wearing one of them has a hole in it already. Not worth the money

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Reviewed in the United States on February 21, 2026

Verified Purchase

Cheryl

Boise, US

★★★★★ 5

Best no show socks is ever

Color: Matte Black, Size: Medium

These are the best no show socks I have ever had! All ads regarding these socks is right on. They never slip. I forget I have them on. Keep up the good work ONDO!

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Reviewed in the United States on May 26, 2026