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 478 reviews
(4.7)|
478 ratings

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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4.7 out of 5 stars
stars478 ratings216 reviews
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Showing 1-3 of 216 reviews

Feb 3, 2026
LindaS
Top Reviewer
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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?89821f50-0b0e-11f1-85c1-b9be452911c7910495638
Jun 24, 2025
Leeciemc
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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.

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Helpful?89821f50-0b0e-11f1-85c1-b9be452911c7910495638
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?89821f50-0b0e-11f1-85c1-b9be452911c7910495638