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

Permatron 3856-1818LRG | Our#: 178208

18" X 18" X 1" Low-Resistance, Electrostatic Permanent Washable Filter

  • 18x18x1" Nominal
  • 17½x17½x⅞" Actual
  • Washable
$39.99 $51.99
In Stock
Ships Monday, Oct. 22nd
Est. Delivery By Oct. 29th

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


by PowerReviews
Permatron18" X 18" X 1" Lifetime Permanent Washable Filter

(based on 1 review)

Reviewed by 1 customer

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Performance is all my concern

By Duraid

from Jacksonville, Florida

About Me Renter

Verified Buyer


  • Good Fit
  • Good Value


    Best Uses

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    Comments about Permatron 18" X 18" X 1" Lifetime Permanent Washable Filter:

    I wish the metal frame was built in a stronger construction since it's a permanent usage

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