I like the Branded 3M merchandise, because it has enough thickness to apply easily. When you shrink it it goes smooth and pretty clear. The 3M tape separates fairly easily to apply it and hold the plastic well. I have used private labeled store brands before and they they don't compare to 3M.

Before I purchased this product I had seen several news reports about energy conservation. This product made a noticeable difference in cutting down on drafts at entrance doorways. The first panel I put in was a bit tricky in trying to keep the wrinkles out of the material; but I eventually worked it out. Overall I found it not too hard to apply and definately worth having as an insulation against the cold.

Desperate to try and save a few bucks on my electric bill I thought I should at least give this product a try. I had no problem hanging the plastic. The double sided tape and plastic were very forgiving. My first window looks as good as the last one. You can barely tell it is there. I tried it out in one room at first to see how well it does. It works! I did the rest of my house after that. Well, I did leave a couple of windows uncovered just in case the weather warmed up. Once this stuff is up it is an all or nothing deal, that window is out of commision until you pull the plastic down. I did have a smooth surface available around each window which does help the tape adhere, might be a consideration if you have heavily textured walls. I don't know how much paint will be ripped off of the walls come spring. It is worth the risk.

It is not 84 inches wide. It is 48 inches wide. I now have to reorder to get a piece that will fit my window.