Duck Max Strength 62 in. x 126 in. Rolled Window Insulation Film Kit, Fits up to 3 Windows

Easy to install. I used 2 boxes to do 3 double windows w/o issues (same as 6 regular size windows). The tape works ok. The plastic is clear and barely noticeable, so we still have a great view/light out of the windows. I feel less air coming in and the plastic does not feel as cold as the glass felt. So far, the cats have not gone after (scratch/punch out) the plastic - fingers crossed. I hope the energy bill is lower in the future. I also hope removing the tape is not too much of a hassle when it is time to take these off (Goo Gone?)

Great deal for multiple window use. Nice quality, a little tricky to use or to get perfect until you get used to the product so make sure the first window you do is in a room you aren't in a lot or care about much haha but by the second window you do, it will be much easier. I also found the included tape to not be the best, however if you buy the tape separately for like 2 bucks from the same brand it works much better. Strange right? Haha. I also recommend NOT CLEANING the window frame prior to applying the tape like they tell you too or like for 3M products I got a much better stick when I did not clean the window frames first. I also recommend letting the tape sit for about 15-20mins prior to applying plastic. And as for the plastic make sure you do it in a specific order if you want a good clean application with no saggy spots. Start at the top then do the left side then apply the right side then the bottom. This allows you to pull the plastic tight on each side for a nice clean look. This product is much better than the KingFrost plastic which is trash in my opinion