Filterbuy 21x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
Filterbuy 21x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack
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Filterbuy 21x21x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 3-Pack

Key item features

  • UNIVERSAL COMPATIBILITY: 21x21x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 20.88" x 20.88" x 0.75")
  • MERV 8 PERFORMANCE: Protect your home or business from pollen, lint, mold, and more with MERV 8 synthetic media (comparable with MPR 700 & FPR 5) that captures 90% of dust without restricting air flow
  • LONG-LASTING FILTRATION: Electrostatically charged media with 14 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for optimal performance)
  • SUPERIOR CONSTRUCTION: Easy installation beverage board frames with dual wire backing outperform flimsy cardboard designs by improving durability, preventing warping, and resisting extreme temperatures
  • MADE IN THE USA: Built with industrial-grade, recyclable materials and proudly manufactured 100% in the United States for dependable indoor air quality that is trusted by millions of homes
Current price is $41.97
Price when purchased online
  • Free shipping
  • Free 30-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $41.97
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $41.97

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Sold and shipped by FilterbuyPro Seller
4.587662337662338 stars out of 5, based on 4312 seller reviews(4.6)
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Customer ratings & reviews

4.6 out of 5 stars
stars
80 ratings20 reviews
How item rating is calculated
  1. 5 stars84% (67)
  2. 4 stars8% (6)
  3. 3 stars3% (2)
  4. 2 stars0% (0)
  5. 1 star6% (5)
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Showing 1-3 of 20 reviews

Feb 18, 2018
Walmart customer
5 out of 5 stars review

Wrong size

I have been using 20x20 filters since we built this house over 20 years ago and have always had a problem with them falling into the return duct space below the unit. Therefore I tried the 21x21 and not to my surprise, they dont fit. Anyone have suggestions?

Review from Filterbuy
Helpful?4RN05WX2Z6NQ802052722
Sep 4, 2024
Walmart customer
5 out of 5 stars review

Filters are perfect

Who can i talk to about maybe exchanging the ones i got (all unused) for 24x22x1 because my old ac had to be replaced this past week and the new one is larger.

Review from Filterbuy
Helpful?4RN05WX2Z6NQ802052722
Jul 17, 2022
Walmart customer
5 out of 5 stars review

Perfect For My Needs!

What initially appeared to be an off brand and, subsequently, less expensive filter, turned out to be a great alternative to my usual 3M purchase Very Happy!

Review from Filterbuy
Helpful?4RN05WX2Z6NQ802052722