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Filterbuy 20x21x5 MERV 13 Air Filter (4-Pack) Health Defense

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$238 USD
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Filterbuy 20x21x5 Air Filter MERV 13 (MPR 1900) Health Defense Replacement (4-Pack), Pleated HVAC AC Furnace Filters for Lennox and Electro-Air (Actual Size: 19.88 x 20.50 x 4.38)

Pleated HVAC air filters with MERV 13 media for improved air quality. Actual size 19.88 x 20.50 x 4.38 inches. Customers note good quality and clean air, with mixed views on fit and installation

Highlights

  • MERV 13 performance
  • 20x21x5 size compatibility
  • 4-pack value

Pros

  • MERV 13 filtration
  • Pleated synthetic media
  • Actual size close to listed
  • Supports air quality improvement
  • Health-focused replacement filter

Cons

  • Mixed fit/fitment reports
  • Some concerns about build quality
  • Installation ease varies by user

Best For

  • furnace filtration
  • air conditioner filtration
  • heat pump filtration
  • home air quality improvement
  • germ and dust reduction
  • household HVAC maintenance

Features

  • Actual size 19.88 x 20.50 x 4.38 inches; fits 20x21x5 housings
  • MERV 13 synthetic media captures dust and germs with 98% efficiency
  • Electrostatically charged, 11 pleats per foot; lasts about 3x longer than fiberglass
  • USA-made media with dual wire backing; recyclable beverage board frame
  • Compatible with Lennox X8790 housing and PCO14-23 cabinet numbers

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