Duck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.
Duck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.
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Duck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.

4.7 stars out of 475 reviews
(4.7)|
475 ratings
Duck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.Duck Window Air Conditioner Foam Insulating Seal 1 38 in x 5 in x 42 in2 pack Duck Window Air Conditioner Foam Insulating Seal 1 38 in x 5 in x 42 in
Pack Size:Single

Key item features

  • Efficient Sealing: This high-density foam seal effectively closes gaps created by window air conditioning units, preventing outside air, dust, insects, and pollen from entering your home.
  • Draft Prevention: The seal creates a weather-tight barrier around your A/C unit, stopping both winter and summer drafts to maintain indoor comfort.
  • Noise Reduction: Beyond sealing, the product also helps to reduce noise and vibration associated with window air conditioning units.
  • Simple Installation: Designed for ease of use, the seal is placed on top of the unit, and the window is lowered to compress it, fitting almost any A/C unit.
  • Customizable Fit: The foam material is easy to cut, allowing for a tailored fit to various air conditioning unit dimensions.
  • Product Specifications: The seal measures 1.38 inches by 0.5 inches by 42 inches and has an item weight of 0.050 pounds.
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Comparison Chart:
FeaturesEasy InstallationDuck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.InsulatedFram Trak Adhesive Replacement Window Air Conditioner Side Panels, 19" H x 12" W, BeigeEasy InstallationDuck Brand 3/8 in x 5/16 x 10 ft Black Foam Weatherstrip Seal, 2 packEasy InstallationComfort Zone Foam Weather Strip, 1.25"x1.25"x42", Seals Gaps Reduces LeaksEasy InstallationDuck Brand 17 ft. Heavy-Duty Rubber Weatherstrip Seal - Medium GapEasy InstallationDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Medium Gap Weatherstrip Seal WhiteEasy InstallationDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Large Gap Weatherstrip Seal WhiteEasy InstallationDuck Brand Black Foam Weatherstrip Seals, 0.75 in. x 0.5 in. x 10 ft.Easy InstallationAir Conditioner Window Weather Sealing Tape 2 Inch x 33 FT Weather Stripping Residue-Free Clear Window Insulation Caulk Tape for Doors WindowsEasy InstallationM-D Building Products 02006 1-1/4 in. X 42 in. Gray Air Conditioner Weatherseal for Window Units
MaterialFoamDuck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.VinylFram Trak Adhesive Replacement Window Air Conditioner Side Panels, 19" H x 12" W, BeigeFoamDuck Brand 3/8 in x 5/16 x 10 ft Black Foam Weatherstrip Seal, 2 packFoamComfort Zone Foam Weather Strip, 1.25"x1.25"x42", Seals Gaps Reduces LeaksRubberDuck Brand 17 ft. Heavy-Duty Rubber Weatherstrip Seal - Medium GapRubberDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Medium Gap Weatherstrip Seal WhiteRubberDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Large Gap Weatherstrip Seal WhiteFoamDuck Brand Black Foam Weatherstrip Seals, 0.75 in. x 0.5 in. x 10 ft.-Air Conditioner Window Weather Sealing Tape 2 Inch x 33 FT Weather Stripping Residue-Free Clear Window Insulation Caulk Tape for Doors WindowsFoamM-D Building Products 02006 1-1/4 in. X 42 in. Gray Air Conditioner Weatherseal for Window Units
Rec locationWindowDuck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.-Fram Trak Adhesive Replacement Window Air Conditioner Side Panels, 19" H x 12" W, BeigeWindowDuck Brand 3/8 in x 5/16 x 10 ft Black Foam Weatherstrip Seal, 2 packWindowComfort Zone Foam Weather Strip, 1.25"x1.25"x42", Seals Gaps Reduces LeaksWindowDuck Brand 17 ft. Heavy-Duty Rubber Weatherstrip Seal - Medium GapWindowDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Medium Gap Weatherstrip Seal WhiteWindowDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Large Gap Weatherstrip Seal WhiteWindowDuck Brand Black Foam Weatherstrip Seals, 0.75 in. x 0.5 in. x 10 ft.WindowAir Conditioner Window Weather Sealing Tape 2 Inch x 33 FT Weather Stripping Residue-Free Clear Window Insulation Caulk Tape for Doors WindowsWindowM-D Building Products 02006 1-1/4 in. X 42 in. Gray Air Conditioner Weatherseal for Window Units
Rec. useExterior WallsDuck Window Air Conditioner Foam Insulating Seal, 1.38 in. x .5 in. x 42 in.-Fram Trak Adhesive Replacement Window Air Conditioner Side Panels, 19" H x 12" W, BeigeWindowDuck Brand 3/8 in x 5/16 x 10 ft Black Foam Weatherstrip Seal, 2 pack-Comfort Zone Foam Weather Strip, 1.25"x1.25"x42", Seals Gaps Reduces LeaksDoorDuck Brand 17 ft. Heavy-Duty Rubber Weatherstrip Seal - Medium GapExterior WallsDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Medium Gap Weatherstrip Seal WhiteExterior WallsDuck Brand Heavy-Duty Rubber .38" x .25" x 17' Large Gap Weatherstrip Seal WhiteDoorDuck Brand Black Foam Weatherstrip Seals, 0.75 in. x 0.5 in. x 10 ft.WindowAir Conditioner Window Weather Sealing Tape 2 Inch x 33 FT Weather Stripping Residue-Free Clear Window Insulation Caulk Tape for Doors WindowsWindowM-D Building Products 02006 1-1/4 in. X 42 in. Gray Air Conditioner Weatherseal for Window Units
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Customer ratings & reviews

4.7 out of 5 stars
stars475 ratings216 reviews
How item rating is calculated
  1. 5 stars80% (382)
  2. 4 stars12% (58)
  3. 3 stars3% (16)
  4. 2 stars1% (4)
  5. 1 star3% (15)

Reviews summary

Pros
  • : Offers a cost-effective solution.
  • : Keeps bugs outside.
  • : Made of thick material that effectively seals air gaps.
  • : Fits securely around air conditioning units and windows.
  • : Can be customized to desired length and shape.
Neutral
  • : Can be effective at blocking hot air, but may have seal inconsistencies.
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Showing 1-3 of 216 reviews

Feb 3, 2026
LindaS
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Good product

The foam around my a.c. Stopped the draft immediately and the cover worked great to protect my unit and seal the window from the cold weather in Northeast WI. I've never left my unit in the window and this product secured it well from winter's bite.

Helpful?a8fd47c0-d40d-11f0-ac61-41720b250fb9910495638
Dec 10, 2025
Sharon
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

heavy duty window air conditioner and to put on.

Helpful?a8fd47c0-d40d-11f0-ac61-41720b250fb9910495638
Jun 24, 2025
Leeciemc
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I didn't actually receive this product as it was sold out when shopped. However, I purchased and used it the week before and it was excellent.

Incentivized Review
Helpful?a8fd47c0-d40d-11f0-ac61-41720b250fb9910495638