Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack
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Filterbuy 18x20x1 Air Filter MERV 8 Dust Defense, Pleated HVAC AC Furnace Filter Replacement, 4-Pack

Key item features

  • UNIVERSAL COMPATIBILITY: 18x20x1 replacement air filters for your furnace, air conditioner, or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size: 17.50" x 19.50" 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 Now $31.46
You save $3.50
was $34.96
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Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $31.46
One-time purchase $31.46

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Sold and shipped by Filterbuy
4.586223391533126 stars out of 5, based on 4181 seller reviews(4.6)
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Customer ratings & reviews

4.8 out of 5 stars
stars586 ratings294 reviews
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Reviews summary

Pros

  • : Fits perfectly in intended space.
  • : Made with good materials and fits well.
  • : Offers discounts for bulk purchases.
  • : Easy online purchasing process.
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Showing 1-3 of 294 reviews

Dec 24, 2025
Jeanne
Sold and shipped byFilterbuy
5 out of 5 stars review

Verified Purchase

Had exactly what I needed and receive in 3 days …. Very pleased!!

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Sep 13, 2025
JM
Sold and shipped byFilterbuy
5 out of 5 stars review

Verified Purchase

Good job, Walmart!

The filters were delivered very quickly, they are competetive with other suppliers.

Helpful?3HCCGK5J6YBQ144105881
Oct 28, 2025
Jeffrey
Sold and shipped byFilterbuy
5 out of 5 stars review

Verified Purchase

Greek delivery service

Helpful?3HCCGK5J6YBQ144105881