THERMWELL Frost King AC43H Air Conditioner Weatherseal Tape, 2-1/4 by 2-1/4 by 42-Inch
Original price was: $5.99.$4.93Current price is: $4.93.
Price: $5.99 - $4.93
(as of Aug 10, 2025 21:38:26 UTC – Details)
2-1/4″ x 2-1/4″ x 42″, Dark Gray, Open Cell Foam Tape, For Weather-Stripping Around Window Air Conditioners, A Resilient, Compressible Strip For Sealing Out Air, Insects & Dust.Do not use it on paint or wallpaper.
For Weather-Stripping Around Window Air Conditioners
Resilient, Compressible Strip For Sealing Out Air, Insects & Dust
Open Cell Foam Tape
Customers say
Customers find the weatherseal tape works well for window units and is easy to cut to fit perfectly, with good insulation that keeps hot air from seeping through windows. The product receives positive feedback for its quality, ease of use, and effectiveness in sealing air conditioners. The thickness receives mixed reviews, with some praising the heavy-duty foam while others find it too thick for their needs.
8 reviews for THERMWELL Frost King AC43H Air Conditioner Weatherseal Tape, 2-1/4 by 2-1/4 by 42-Inch
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Original price was: $5.99.$4.93Current price is: $4.93.
Long time Amazonian –
I’ve used these for the past 10 years around my home
I’ve used these were great results, no frozen pipes, around my house the past 10 years.They’re very easy to use, are very well insulated, seal the pipes I’ve used them on very well, and stay where they’re put.I’ve used them instead of the styrofoam covers that are typically used because they just seem to last longer and don’t look obnoxious on the house.The thickness is good without being overwhelming. I’ve used them for 10 years and never had an issue with any pipes freezing. Highly recommended.
Steve L –
It’s good squishy foam for sealing air gaps in windows and stuff
It’s foam. I use it to close the gap on the top of the open windows when I put the a/c in. Works good for a few times. Then I gotta buy more. Does the job. I buy the 4 inch so I can squeeze it in there and get a good seal.
AJ –
Good material, very thick
This product is exactly what I was looking for to stuff around my window AC Unit! Be aware that it is extremely thick, but it can be cut very easily with a utility knife. It is a pretty thick material also, not thin and flimsy like some brands.
Amazon Customer –
Good if you need thicker insulation
Thick, heavy duty foam but it’s too short for $5. I had to buy 2. You could buy thinner foam for most uses.
DD –
Works great
This foam does a great job of filling in the gap of double hung windows when you have them open for a window air conditioner. Good thick size. There is no adhesive on this foam strip.
Michael Franks –
Very easy to use and very effective around my window air conditioner
Why did you pick this product vs others?:Perfect for my AC window unit. I used a thick one to put between the gap at the top of the window. Works beautifully.
YorkiesRock –
Great substantial product
Fantastic foam for the narrow spaces open around your AC.
Susie Lawhorne –
Get this larger one
Worked great for me. I used some of it for cracks after cutting that piece in 1/2. Easy to do, so get thus larger one if not sure if size.