Filterbuy 21x21.5x5 MERV 11 air filter (4-pack) 20x21.09x4.97

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$213 USD
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Filterbuy 21x21.5x5 Air Filter MERV 11 (MPR 1200) Allergen Defense Replacement (4-Pack), Pleated HVAC AC Furnace Filters for Trane Perfect Fit & American Standard (Actual Size: 20.00 x 21.09 x 4.97)

Pleated HVAC furnace filters with MERV 11 for allergen control and airflow. Customers note good value and easy installation, though some report sizing and durability concerns

Highlights

  • MERV 11 filtration
  • Actual size around 20.00 x 21.09 x 4.97
  • 4-pack replacement filters

Pros

  • MERV 11 filtration for allergens
  • Easy to install
  • Good value for money
  • Fits furnace/air conditioner systems

Cons

  • Mixed reviews on size accuracy
  • Flimsy construction reported during installation
  • Potential damage during handling

Best For

  • furnace filter replacement
  • air conditioner/heat pump filtration
  • allergen control in homes
  • pet dander filtration
  • homes needing breathable airflow
  • replacement for 20x21 inch filters

Features

  • WHOLE HOUSE REPLACEMENT 21x21. 5x5 air filters for your furnace
  • air conditioner
  • or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size 20. 00" x 21. 09" x 4. 97")
  • 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 (made in the USA) with 8 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 (recyclable) frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures

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