


20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
20x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus CarbonActual Size: 19 1 2 x 19 1 2 x 3 5 8 (19. 5 x 19. 5 x 3. 63) Removes lint, household dust, pollen, smoke particles, dust mites, pet dander, virus carriers, mold spores, help eliminate unwanted odors and other contaminants. If you are replacing a Honeywell or Lennox 20x20x4 Plus Carbon or an air filter with an MPR rating with an actual depth of 4 3 8, please see our 20x20x5 (4 3 8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter
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4.1 ★★★★★
Based on 2159 reviews
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Product Reviews
★★★★★ 5
Luxurious look and feel
Size: Queen (2 Count), Color: Gray
These satin pillowcases in silver are so luxurious looking and feeling! I flop around at night and need a pillowcase like this to prevent the rats’ nests that form in my fine hair.
The stitching is even and tight with no loose threads that I could see. The envelope pocket is plenty deep to keep your pillow contained.
I didn’t see any washing instructions but from experience I will give them a quick handwashing in the sink and hang to dry.
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Reviewed in the United States on October 14, 2025
★★★★★ 2
Nice Idea, Disappointing Reality
Size: Queen (2 Count), Color: Gray
I really wanted to love these satin pillowcases, but they fell short. While they look nice at first and feel cool when you lay down, the material is very slippery and constantly slides around during the night. By morning, the pillowcase is usually twisted or halfway off the pillow.
They also feel thinner than expected and don’t hold up well after washing, even on a gentle cycle. For the price, I was hoping for better quality and durability. They might work for occasional use, but they didn’t meet my expectations for everyday sleep.
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Reviewed in the United States on January 19, 2026
★★★★★ 5
It works! Quality pillow.
Size: Standard (1 Count), Color: Original White (Cooling)
This does actually provide a cooling effect, and it's very comfortable! The accompanying literature is helpful too. I believe this to be a quality pillow for the price.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Smell
Size: Queen (2 Count), Color: Original White (Cooling)
The fact that there are not more comments on the smell of these pillows has me worried about some of yall. Listen, I LOVE the weight, and the firmness, it’s perfect for that. However, these pillows are RANK. They have a very strong mildew-ish smell that lingers. I took the outer cover off and washed it and let the pillow air out for a few days, the smell is still very strong when you press your face against it, which one does because it is in fact designed for that purpose. It smells so bad. It’s nauseating. I can smell it through two pillowcases and blanket that I threw on top of them hoping an extra layer would trap the smell. I’ll bake them in the Texas sun tomorrow and hope that helps, because otherwise these are the perfect pillows for someone who wants to feel like they are hugging a torso but can’t stand the sound/feel of someone else breathing. I don’t know…4 stars, if the smell goes away I’ll come back.
Update: many many days later. Either they don’t really smell anymore or I got use to it. They’ve held their firmness and shape well. I like them.
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Reviewed in the United States on March 9, 2026