Filterbuy 21x23x1 MERV 11 Air Filter (3-Pack)

Filterbuy ★ 4.0/5 · ItemOracle Score Mid-Range

$57 USD
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Filterbuy 21x23x1 Air Filter MERV 11 Superior Pet & Allergy Defense (3-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 20.50 x 22.50 x 0.75)

Premium pleated HVAC air filters with MERV 11 for allergen control and improved airflow. Customers note high quality and effective dust capture, with some sizing discrepancies mentioned

Highlights

  • MERV 11 synthetic media
  • actual size 20.50 x 22.50 x 0.75
  • 3-pack convenience

Pros

  • MERV 11 filtration for allergens
  • Electrostatic pleated design
  • Universal 21x23x1 compatibility
  • Sturdy construction and lasting durability
  • 3-pack for multiple replacements

Cons

  • Actual size may differ slightly from expected

Best For

  • furnace filtration
  • air conditioner filtration
  • heat pump filtration
  • dust and allergen reduction in homes
  • multi-room replacement planning
  • USA-made quality

Features

  • UNIVERSAL COMPATIBILITY 21x23x1 replacement air filters for your furnace
  • air conditioner
  • or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size 20. 50" x 22. 50" x 0. 75")
  • MERV 11 PERFORMANCE Protect your home or business from allergens
  • pets
  • and more with MERV 11 synthetic media (comparable with MPR 1200 & FPR 7) that captures 95% of dust without restricting air flow
  • 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 best results)
  • SUPERIOR CONSTRUCTION Easy installation beverage board frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures

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