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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I bought this for my ex-wife's Pitbull. He is an aggressive chewer and usually destroys any toy I buy him. But not this one! The ball is small enough and pliable that it gives when he chomps on it. He loves this ball and seems to be his favorite toy. Thank you for making a product that he likes and can't destroy!

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Reviewed in the United States on December 30, 2024

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Sean

Natrona Heights, US

★★★★★ 5

My Golden Retriever’s favorite

We’ve owned lots of toys and balls. This specific version (in blue) has been her absolute favorite. She’s about 72lbs and chews on this thing regularly with no visible damage. We actually own about 6 of them because they have a tendency to go missing underneath furniture and in the yard. We have two of the orange colored ones but she doesn’t like those nearly as much which I assume is because the blue is easier to see in the grass. Other than that…They bounce really well and also whistle a little when you throw them hard enough. I hope they never stop making these.

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Reviewed in the United States on October 6, 2024

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Alp acct

Fort Morgan, US

★★★★★ 4

doesn't whistle as loud as other chuckit balls I've seen, but a good ball.

makes some noise, but I've seen (and played with) others at the dog park that whistle much louder than the 1 I got. all Chuckit balls... so, just this one I'm betting. but it flys good and the dog loves to chase it. he chews it a fair bit as well and the ball has not taken much damage from him (lab mix) or others that have had a go at it. I'll likely buy another at some point ... just wish it was a little louder when flying.

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Reviewed in the United States on November 4, 2025

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Waukegan, US

★★★★★ 5

Blue ball, my dog likes blue.

Just a ball right? Evidently not! My dog won’t chase an orange chuck it ball or the glow in the dark ball- only the blue one 🤷🏼‍♀️

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Reviewed in the United States on May 9, 2025

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Baker-s

Battle Creek, US