12" X 24" X 1" Lifetime Permanent Washable Filter

Permatron 3856-1224LRG | Our#: 178130
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12" X 24" X 1" Low-Resistance, Electrostatic Permanent Washable Filter

  • 12x24x1" Nominal
  • 11½x23½x⅞" Actual
  • Washable

$39.99 $51.99
In Stock
Ships Tomorrow, Apr. 28th
4.6 stars (5 reviews)

12" X 24" X 1" Low-Resistance, Electrostatic Permanent Washable Filter

(actual size - 11-1/2" X 23-1/2" X 3/4")

Never buy another filter!  Our permanent washable filter is designed to provide great value and last a lifetime.   This durable filter is constructed with a combination of woven polypropylene media supported by heavy-duty steel mesh in a galvanized steel frame. The filter carries a lifetime warranty and is ideal for heat pumps, sensitive 90+ efficient furnaces and systems with limited air flow.  This is the best and last filter you will ever buy.


  • 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
  • Washable - cleans up in minutes
  • 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

Clean Monthly by rinsing your filter with running water.  For tough dirt and/or grease, use a mild detergent (i.e., 409 or Simple Green) and rinse thoroughly with warm water.

Average arrestance efficiency - 74%
Initial resistance - 0.07" w.g.
Dust holding capacity - 110 grams

12" X 24" X 1" Lifetime Permanent Washable Filter
12" X 24" X 1" Lifetime Permanent Washable Filter Reviewed by 5
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Displaying reviews 1-5:

By Larry M.


 5 of 5

12x24x1 Lifetime Permanent Washable Filter


Recvd both sizes (20x30x1 also) and appear to be mfg good. Currently under construction which will put both filters to the test. Well made & recvd both sizes in good shape. Here we go!

BOTTOM LINE: Yes, I recommend this product

By June O.


 5 of 5

I ordered 3 filters because my air conditioner required 3


I have not used the filters yet. My husband had just replaced the filters when I received these. He said these appear to be excellent filters and we have showed them to several of our friends and they wanted to know where we had gotten them. The thing about our filters is the store don't always have them and you have to go from store to store. They aren't even washable! I think I'm going to really enjoy them. The last house we lived in my husband had bought lifetime filters locally and he paid $100.00 each for them and that was 20 years ago. They were very good.. Of course we left them in the house when we sold it.

BOTTOM LINE: Yes, I recommend this product

By JC F.


 3 of 5

Fits well, arrived quickly


Installed 10 days ago, so I haven't compared the trapped dust against a 30 day disposable filter yet. Box arrived open on one side, not well taped, with no packing slip. Attached installation instructions refer to air flow direction, but the filter does not have any labeling indicating air flow. Points to the online customer service person who told me that this filter is identical on both sides & doesn't have a specific side for in-flow. Good solid product, just needs better shipping & information shipped along with it.

BOTTOM LINE: Yes, I recommend this product

By Ray


 5 of 5

Great Product, Works as Described



BOTTOM LINE: Yes, I recommend this product

By Steve p.


 5 of 5

The Perminent Filter


Thus far I am very happy with the product. No complaints. The Customer Service Staff very friendly and helpful.

BOTTOM LINE: Yes, I recommend this product

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