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Filterbuy 21x21x1 Air Filter MERV 11 (2-Pack) Electrostatic Pleated

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$37 USD
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Filterbuy 21x21x1 Air Filter MERV 11 Superior Pet & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 20.88 x 20.88 x 0.75)

Filterbuy 21x21x1 air filter with MERV 11 performance. Helps reduce dust and improve air quality. Customers note solid build, easy installation, and good value

Highlights

  • MERV 11 filtration
  • 21x21x1 universal compatibility
  • easy installation

Pros

  • MERV 11 filtration
  • Electrostatic pleated media
  • Universal 21x21x1 compatibility
  • Easy to install
  • Made in USA

Cons

  • Some customers report size not matching required dimensions

Best For

  • furnace filter replacement
  • air conditioner filter replacement
  • heat pump system filtering
  • home allergy reduction
  • pet dander filtration
  • improving indoor air quality

Features

  • 21x21x1 replacement filter compatible with furnaces, air conditioners, or heat pumps
  • MERV 11 synthetic media captures dust and allergens without restricting airflow
  • electrostatically charged 14-pleat design provides longer-lasting filtration
  • dual wire backing with beverage board frame for improved durability in extreme temperatures
  • made in the USA from industrial-grade, recyclable materials

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