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Duck Brand, 18 Inch X 9 Inch X 0.88 Inch Black Foam Window Air Conditioner Insulating Panels, 2 Pack

334 ratings

Key item features

  • Exact Dimensions: Each panel is constructed from black foam, measuring 18 inches by 9 inches by 0.88 inches, with two such panels included per package.
  • Custom Fit: These foam insulating panels are effortlessly cut and used to achieve a tailored fit for virtually any window air conditioning unit.
  • Comfort Enhancement: Effectively closes unwanted gaps to prevent dust, insects, and pollen entry, while also significantly reducing noise and vibration from the air conditioning unit.
  • Effortless Installation: Designed for simple installation and clean removal, making these insulating seals ideal for renters, leaseholders, and temporary living spaces.
  • Year-round Efficiency: Boosts energy efficiency and comfort in various settings, including homes, offices, and RVs, especially when combined with other Duck Brand weatherization products.
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Specs

R-value, 0Weatherproofing window insulation kit type, Insulation FilmInsulation thickness, 0.88 inFeatures, Easy InstallationMaterial, FoamSize, 18 in. x 9 in. x .88 in.

About this item

Product details

Keep everything flowing smoothly in your favorite living and workspaces using these Duck Brand Window Air Conditioner Insulating Panels. They can provide added comfort in the hot summer months, as well as close unwanted gaps that let in dust, insects and pollen. These air conditioner foam insulating panels are easy-to-install foam seals. They're ideal for closing the spaces between the A/C unit and the window frame and reduce noise and vibration from the A/C unit. These air conditioner side insulating panels can be used together with other Duck Brand weatherization products to make your home, office, RV or any other place with a window unit more comfortable and energy-efficient throughout the year.
  • Easy to cut and use to fit almost any A/C unit
  • Includes 2 panels per package
  • Easy to install
  • The insulating side panel removes cleanly, making it safe for renters, leaseholders and temporary living spaces
  • Model Number: 287518
  • Item Weight: 0.360 LB
  • Brand: Duck
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.  

Specifications

R-value

0

Weatherproofing window insulation kit type

Insulation Film

Insulation thickness

0.88 in

Features

Easy Installation

Warranty

Warranty information

Liability limited to replacement or refund of product cost. Call 1-800-321-0253 for details.

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

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Customer ratings & reviews

4.5 out of 5 stars
stars
334 ratings88 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars75% (250)
  2. 4 stars11% (38)
  3. 3 stars7% (23)
  4. 2 stars3% (9)
  5. 1 star4% (14)

Reviews summary

Pros

  • : Straightforward process for most customers.
  • : The product uses robust, well-assembled components.
  • : Allows for a tight and secure installation.

Neutral

  • : Offers competitive pricing, but can be steep for some users.
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Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 88 reviews

Oct 25, 2026
Reviewer name: TheDeacon
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Another insulation fix

I never thought about how much cold air could pass through the accordion panels on the sides of the window air conditioner before now. It's amazing how much insulation these foam panels provide - and I hope it translates to energy savings this winter.

Helpful?4VDKSBLICPGP905097215
May 31, 2026
Reviewer name: KittyDeviance
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

fits %26 can be trimmed easily

this was very easy to use...took them out of package then sized them to window and cut them shorter and put them over the side accordion things on each side of the window AC unit...they fit like a charm...I had no idea what the plastic things were for and they were unable to be cut easily for me so I decided to just toss them...I pretty much tape the foam to the sides with weather seal type tape....it's an excellent product

Helpful?4VDKSBLICPGP905097215
Jul 22, 2026
Reviewer name: connie
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Absorbingly nice

We tried using cardboard but it doesn't hold up with our steamy weather. This foam lasts several years and looks more attractive .

Helpful?4VDKSBLICPGP905097215
Current price is $17.82$8.91/ea
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