



20x21x1 Exact MERV 12 AC Furnace Filters
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
20x21x1 Exact MERV 12 AC Furnace FiltersActual Size: 20 x 21 x 3 4 (20 x 21 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 12
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
Based on 169 reviews
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Product Reviews
★★★★★ 5
Very good product! Gorgeous wood
These 4’ wide shelves are very nice. The wood is blond and gorgeous. I bought 2 sets. The hardware is very heavy duty iron piping!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2025
★★★★★ 4
Great when installed. Some problems
Style: 48inch 2 tier
The shelves are assembled and installed on my wall. I'm happy with them. They look great and are very sturdy. What prevents a 5-star rating? The instructions were poor. Not a huge deal as I was able to figure things out. The wall anchors that came with were cheap and (in my opinion) unusable. I went to Lowe's and bought some drywall anchors that were rated for 79 pounds and they worked well. During the install, I wasn't sure if I should attach the wall plates and assemble the shelves on the wall, or assemble everything and then attach it to the wall. Assembling before hanging was the way to go but it took two people.
One other minor thing: The shelves are stained on one side an not the other. Since I have them high up on a wall, I'm looking at the unstained side. Yes, I can stain the unstained part, but it would be nice if they had just stained the top and bottom at the factory.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2022
★★★★★ 5
Beautiful Shelving Unit
Style: 48 inch 3 tier
The shelving unit is beautiful. It has not been hung yet, but I plan on using it to replace my entertainment center and hang my TV above it. I am so excited as the shelves matched perfectly to my furniture so I believe it will be a lovely addition to my living room and take up less space than the entertainment center does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
Shelves
Style: 5-Tier Shelf Brackets, Hardware Only
Great shelves, strong and they look great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 5
great shelves
Style: 4-Tier Shelf Brackets, Hardware Only.
looks so good on a wall, would buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
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