Will this fit my window AC?

Each panel is 11.8 x 17.7 in and trims with scissors, so it covers most side gaps on standard window units. Measure the opening beside your unit before cutting.

How do the panels stay in place?

Two 15.9 in self-adhesive channels stick to the window frame and hold the panel edges. Clean and dry the frame first so the adhesive grips.

Can I use it instead of the accordion fillers that came with my AC?

Yes. It is made as a replacement for worn or missing accordion side panels. Cut each panel to the gap size and press it into the channels.

Does the foil side face in or out?

Face the silver foil toward the room or the sun depending on your goal; the foil reflects radiant heat either way. The foam core provides the insulation.

Is it reusable if I move or change units?

The panels can be recut, but the adhesive channels are single-use once stuck down. Plan on fresh channels for a new window or unit.

EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit

Best price now

$21.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit

Best price now

$21.99at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $21.99 at Walmart on Nov 10.

Our take on the EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit

This is a two-panel kit for sealing the gaps beside a window air conditioner. Each panel is 11.8 x 17.7 x 0.8 in, foil-faced on one side, and trims with scissors to fit the opening. Two 15.9 in self-adhesive channels hold the panels against the window frame. It replaces worn or missing accordion fillers, and the foil face reflects heat where a plain plastic filler does not. It suits renters and owners with an older unit whose original side panels are torn or lost, or anyone sealing a wide gap around a smaller AC.

Best forReplacing torn or missing accordion side fillersSealing gaps beside a window AC unitRenters who cannot modify the window frameCutting to fit odd opening sizes

Pros

Cut-to-fit with scissors for a custom size
Foil-faced surface reflects heat back out
Self-adhesive channels hold panels in place
Two panels cover both sides of the unit
Thicker than typical accordion plastic fillers

Cons

Foam core can crush or tear if handled roughly
Adhesive channels may not grip dirty or damp frames
Not a substitute for proper weather sealing around the unit
Foil face can wrinkle and look uneven once installed

EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit prices at every store

WalmartNew
In stockSold by EEEKitReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$21.99Free shippingChecked Nov 10
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About the EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit

This kit fills the open spaces on either side of a window air conditioner. The panels are foil-faced and cut to fit with scissors, so you can size them to your window. They can replace worn or missing accordion fillers.

Two self-adhesive channels hold the panels along the window frame.

Panel size: 11.8 x 17.7 x 0.8 in
Panel facing: Silver foil
Channels: 2 self-adhesive channels, 15.9 in each
Fit: Cut to size with scissors
Color: White
Use: Window air conditioner side insulation

Specifications

color: WhiteSource
size: 11.8" x 17.7" x 0.8"Source

Questions and answers

Will this fit my window AC?: Each panel is 11.8 x 17.7 in and trims with scissors, so it covers most side gaps on standard window units. Measure the opening beside your unit before cutting.
How do the panels stay in place?: Two 15.9 in self-adhesive channels stick to the window frame and hold the panel edges. Clean and dry the frame first so the adhesive grips.
Can I use it instead of the accordion fillers that came with my AC?: Yes. It is made as a replacement for worn or missing accordion side panels. Cut each panel to the gap size and press it into the channels.
Does the foil side face in or out?: Face the silver foil toward the room or the sun depending on your goal; the foil reflects radiant heat either way. The foam core provides the insulation.
Is it reusable if I move or change units?: The panels can be recut, but the adhesive channels are single-use once stuck down. Plan on fresh channels for a new window or unit.
Where is the EEEkit 11.8 x 17.7'' Cut-to-Fit Window Air Conditioner Side Insulation Panels Kit cheapest?: At Walmart, for $21.99, as of our latest check.