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Filterbuy 20x21x5 MERV 8 Air Filter 3-Pack

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$118 USD
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Filterbuy 20x21x5 Air Filter MERV 8 Essential Dust & Allergy Defense (3-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement for Lennox and Electro-Air (Actual Size: 19.88 x 20.50 x 4.38)

Electrostatic pleated furnace air filters with MERV 8 for dust and pollen control. Helps maintain HVAC efficiency and a healthier home. Customers note good performance and solid value

Highlights

  • MERV 8 performance
  • dust and allergy defense
  • three-pack for value

Pros

  • electrostatic pleated design
  • filters pollen and lint
  • three-pack value
  • fits 20x21x5 sizes (actual 19.88x20.50x4.38)

Cons

  • actual size differs from nominal
  • rating based on customer feedback without formal test data

Best For

  • furnace filtration
  • air conditioner filtration
  • air purification in homes
  • dust and allergy control
  • monthly replacement cycles
  • heating and cooling system maintenance

Features

  • Whole house replacement filter measures 19.88 x 20.50 x 4.38 inches
  • MERV 8 synthetic media captures dust, pollen, lint, mold
  • Electrostatically charged media with 8 pleats per foot lasts longer
  • Dual wire backed beverage board frames improve durability
  • Compatible with Lennox X8790 model

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