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Filterbuy 21x21x5 MERV 13 Pleated HVAC Filter (2-Pack)

Filterbuy ★ 3.8/5 · ItemOracle Score Mid-Range

$107 USD
Price subject to change
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Filterbuy 21x21x5 Air Filter MERV 13 Optimal Smoke & Allergy Defense (2-Pack), Electrostatic Pleated HVAC AC Furnace Filters Replacement for Rheem, Ruud, & Protech (Actual Size: 20.63 x 20.63 x 4.38)

Filterbuy 21x21x5 air filters with MERV 13 synthetic media for better air quality. Easy to install with attention to alignment; real size 20.63 x 20.63 x 4.38. Customer notes on fit and durability vary

Highlights

  • MERV 13 performance
  • 2-pack
  • Actual size specified

Pros

  • MERV 13 filtration
  • Electrostatic pleated design
  • Includes 2-pack
  • Actual size documented
  • Easy to install with alignment attention

Cons

  • Sizing may be larger than expected
  • Mixed durability feedback

Best For

  • home furnace filtration
  • air conditioner filtration
  • heat pump filtration
  • allergy and germ defense
  • commercial HVAC filtration
  • replacement for Rheem/Ruud/Protech systems

Features

  • Whole-house 21x21x5 air filter replacement for furnace use
  • MERV 13 performance captures 98% of dust and pathogens without reducing airflow
  • Electrostatically charged media, 11 pleats per foot, USA-made for longer life
  • Durable beverage board frame with dual wire backing resists extreme temperatures
  • Compatible with Rheem/Ruud Protech models PD540018, 540012

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