21x21x4 MERV 8 Pleated Air Filter

21x21x4 MERV 8 Pleated Air Filter
Made in the USA
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icon indicates a Minimum Efficacy Rating Value of 8 for the replacement air filter
MERV 8 / Silver
Standard
3 Month Filter
  • 21x21x4 MERV 8 filters made and manufactured by FilterBuy
  • Actual Size 20.5x20.5x3.75"
  • Traps and blocks over 90% of pollen, dust mites, mold, larger dust particles, and more.
  • Ideal for standard and residential commercial use
  • Designed to last 90 days. Replace regularly for optimum performance.
  • Free shipping on all orders!
  • Learn more about 21x21x4 Air Filters.
Other MERV Ratings Available
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Made in the USA
Filterbuy ships replacement air filters in 24 hours iconShips in 24 Hours
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