Fram Trak Deluxe Colors Adhesive Replacement Window Air Conditioner Side Panels, 19"H x 12"W White

The adhesive is very strong.

Summer's been hot this year and my window air conditioning unit is getting to be several years old. It still blows cold but some of the window insulation foam and the plastic side pieces have just worn out and are no longer in good condition. These panels from Fram Trak worked well for replacing my aged vinyl panels that came with the unit. They're a universal fit and should fit tall and short units. You get 2 panels in the package that you have to trim the height of to fit your unit's height. The pieces themselves I think are vinyl or some sort of plastic that seem to be stretchy enough to flex from the AC unit to most normal residential window sizes. I like the 3M branded double sided sticky tape which I know is good stuff. I got the cloud gray but if I had to do it again would probably get white to match the AC and reflect more sunlight. This still works and would work fine if you had grey siding or a gray AC unit. I'm not completely sure if this holds out the heat better than others, but it feels about the same as when I originally brought home my AC. I cover it up with curtains regardless to help insulate because no thin plastic or vinyl can keep heat out very well. Overall these are great replacement panels if you need some.