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Filterbuy 21x21x5 MERV 11 Pleated Furnace Filter (2-Pack)

Filterbuy ★ 4.0/5 · ItemOracle Score Mid-Range

$88 USD
Price subject to change
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Filterbuy 21x21x5 Air Filter MERV 11 Superior Pet & 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)

MERV 11 pleated HVAC filters for furnace/AC/heat pump. Improves air quality and system efficiency. Customers note good quality, easy installation, and effective filtration for households with pets

Highlights

  • MERV 11 synthetic media
  • Actual size close to 20.63 x 20.63 x 4.38
  • 2-pack convenience

Pros

  • MERV 11 filtration
  • Easy installation
  • Compatible with multiple systems
  • Rigid construction (per some customers)

Cons

  • Mixed sizing fit reports
  • Some customers find it too large for their furnace

Best For

  • furnace air filtration
  • air conditioner filtration
  • heat pump filtration
  • homes with pets
  • allergen reduction
  • dust control

Features

  • Fits 21x21x5 air filter frame with actual size 20.63 x 20.63 x 4.38 inches
  • MERV 11 synthetic media captures 95% of dust and allergens
  • Electrostatically charged media lasts longer than fiberglass; replace every 90 days
  • Dual-wire backed recyclable beverage board frame for durability and temperature resistance
  • Compatible with Rheem, Ruud, and Protech models (PD540018 / 540012)

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