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Filterbuy 18x21x1 MERV 11 Air Filter (4-Pack)

Filterbuy ★ 4.1/5 · ItemOracle Score Mid-Range

$80 USD
Price subject to change
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Filterbuy 18x21x1 Air Filter MERV 11 Superior Pet & Allergy Defense (4-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 18.00 x 21.00 x 0.75)

Universal 18x21x1 pleated air filters with MERV 11 performance for allergens and pets. Noted for quality and value, with some users reporting fit and size concerns

Highlights

  • merv 11 filtration for allergens
  • universal 18x21x1 compatibility
  • electrostatic pleated media

Pros

  • universal compatibility 18x21x1
  • merv 11 filtration
  • electrostatic pleated design
  • fiber media captures dust
  • made in usa

Cons

  • some customers report fit issues
  • actual size may differ from stated
  • airflow restriction reported by some users

Best For

  • furnace replacement
  • air conditioner replacement
  • heat pump HVAC system
  • allergen reduction in home
  • pet dander filtration
  • dust control in living spaces

Features

  • Universal 18x21x0.75 in. air filters for furnaces, air conditioners, or heat pumps
  • MERV 11 performance with 95% dust capture using synthetic media
  • Electrostatically charged, 14 pleats per foot for longer-lasting filtration
  • Durable construction with beverage board frames and dual wire backing
  • Made in the USA using industrial-grade, recyclable materials

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