Filterbuy 20 x 20 x 4 in MERV 8 Pleated HVAC AC Furnace Air Filter Replacement 2-Pack for Dust Defense
Filterbuy 20x20x4 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack
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Filterbuy 20x20x4 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 2-Pack

3,546 ratings

Key item features

  • UNIVERSAL COMPATIBILITY: 20x20x4 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 19.50" x 3.63"), also compatible with White Rodgers (ACM1600M, ACM1600M-108, FR1600-100, FR1600M-108, FR1600M-111)
  • 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 8 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

Specs

Air filter size, 20 x 20 x 4Minimum efficiency reporting values (merv), 8Brand, FilterbuyMicroparticle performance rating, 700Thickness, 4 inMaterial, Plastic

About this item

Product details

The Filterbuy replacement air filter 20x20x4 (actual size: 19.50" x 19.50" x 3.63") ensures that your furnace, air conditioner, heat pump, or HVAC system is circulating the cleanest air possible to help preserve your budget and healthy lifestyle. MERV 8 synthetic media (comparable with Clean Living Dust Defense MPR 700 & FPR 5) is recommended in most scenarios with its capability to trap 90% of dust particles while protecting your home or business from lint, pollen, mold, dander, and other forms of debris without impacting air flow. High quality construction features an electrostatically charged design with 8 pleats per foot that captures more harmful particles and prolongs the products lifespan by three times that of fiberglass models (replace every 90 days for best results). Plus, our industrial grade beverage board frames are paired with dual wire backings that significantly outperform traditional cardboard compositions by improving structural integrity with their ability to endure temperatures up to 200 degrees Fahrenheit and withstand exposure to moisture. Installation is also made simple with the addition of easy-to-understand arrows that help identify the direction of air flow and subsequently the way the filter needs to be placed. To top it off, all our components are 100% manufactured within the United States and designed with recyclable materials, providing an eco-friendly alternative to enhancing your air quality.
  • UNIVERSAL COMPATIBILITY: 20x20x4 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 19.50" x 19.50" x 3.63"), also compatible with White Rodgers (ACM1600M, ACM1600M-108, FR1600-100, FR1600M-108, FR1600M-111)
  • 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 8 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
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Specifications

Air filter size

20 x 20 x 4

Minimum efficiency reporting values (merv)

8

Brand

Filterbuy

Microparticle performance rating

700

Warranty

Warranty information

Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues.

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.5 out of 5 stars
stars
3,546 ratings1,201 reviews
Includes global ratings and reviews
How item rating is calculated

Reviews summary

Pros

  • : It is priced lower than many retail stores.
  • : The purchase process is quick and simple.
  • : The site completes purchases quickly and smoothly.
  • : Site navigation enables quick ordering and size selection.

Neutral

  • : Filters fit snugly in some units but arrive undersized in others.
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Showing 1-3 of 1,201 reviews

Oct 26, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

Great filters

Found exactly what I needed for my furnace. Can't find these in a regular home improvement store. Just bought my home and needed new filters and this was in it and I got the information off the old filter and looked this site up and found my replacement very easily. Recommend this site and very fast shipping also.

Review from Filterbuy
Helpful?3IXL7J98OJAT133688829
Sep 13, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

Best filter I tried.

It was great!, Quick shipment, like the quality and also like the extra comments that were sent about maintenance of the different A/C units we have. This is a company that seems to care about their customers.

Review from Filterbuy
Helpful?3IXL7J98OJAT133688829
Aug 28, 2026
Reviewer name: Customer
5 out of 5 stars
5 out of 5 stars review

First time using this brand.

First time using this brand. I have been in the natural gas business with a service department for 44 yrs. Now retired. I will see how they hold up in my own house. Thank you for your inquiry.

Review from Filterbuy
Helpful?3IXL7J98OJAT133688829
Current price is $49.98
Price when purchased online
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Sold and shipped by FilterbuyPro Seller
4.595959595959596 out of 5 stars
4.6 stars out of 5, based on 4752 seller reviews(4.6)
Extended holiday returns
Free Holiday returns until Jan 31