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Permatron 3856-1820LRG | Our#: 178136

18" X 20" X 1" Lifetime Permanent Washable Filter

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Permatron 3856-1820LRG | Our#: 178136

  •  Free Shipping & Returns
  •  100% Compatibility Guarantee

Designed to be used & re-used

  • Filter is washable & permanent
  • Reduces contaminants & allergens
  • Helps keep your HVAC system clean
  • Creates cleaner indoor air
  • Last filter you'll ever need!
  • Actual Dimensions: 17½" x 19½" x ⅞"

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Product Details

If you want to protect your heating and cooling system from dust and dirt - and you are tired of buying disposable air filters, this is the air filter for you!  This durable washable filter is designed to provide great value and last a lifetime. Don't drive around town looking for a washable air conditioner filter or furnace filter.  Order online and will quickly ship to your front door!

  • Designed to minimize initial resistance to airflow
  • Reduces the number of pollutants and allergens in recirculated air and keeps your HVAC system clean
  • Uses natural static electricity to attract and capture airborne particles
  • Includes anti-microbial polymeric protection
  • Durable steel frame
  • Dirt won't get caught in the filter during washing - due to specially-designed drainage ports in the filter frame
  • Lifetime warranty
  • Wash every 30 days under normal use
  • Made with pride in the USA
  • 100% free returns on all filters

What does this air filter remove?

Pollutants

Do you want to know about the technical specs?

Nominal Dimensions
18 x 20 x 1"
Actual Dimensions
17½ x 19½ x ⅞"
Filter Media
Woven polypropylene media
Filter Support Grid
Heavy duty steel mesh
Frame
Rugged steel frame
Max Temperature
180F (82C) continuous service, peak 225F (107C)
Max Humidity
Resistant to 100% R.H.

Product Documentation