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Filter King 18x18x4 Air Filter 5-Pack MERV 8

Filter King ★ 3.6/5 · ItemOracle Score Mid-Range

$118 USD
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Filter King 18x18x4 Air Filter | 5-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 17.5 x 17.5 x 3.75"

MERV 8 pleated air filters in a 5-pack with actual size 17.5 x 17.5 x 3.75. Designed for improved particle capture and airflow, with installation that’s easy to swap in. Customers note good quality and fit, though some report airflow and seal variability

Highlights

  • made in USA
  • actual size slightly smaller than nominal
  • 5-pack for convenience

Pros

  • pleated MERV 8 filtration
  • 5-pack supply
  • made in USA
  • easy installation
  • captured particles and airflow maintained

Cons

  • mixed feedback on airflow performance
  • seal quality can vary
  • some report fit/size issues

Best For

  • replacement for home HVAC filters
  • air purification in living spaces
  • prevention of dust entering system
  • routine maintenance cycle
  • use in central A/C and furnaces
  • packs for multiple filter changes

Features

  • MERV 8 rated 5-pack air filter for HVAC systems
  • Actual size 17.5 x 17.5 x 3.75 inches; nominal 18 x 18 x 4 inches
  • US-made with materials and construction produced in the United States
  • Filter lasts up to 90 days under typical use

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