Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy to install

I read many a horror stories of installation. So I tried this with some hesitation. It was a breeze. I don't think I rate myself high on being handy, but by simply following the instructions I was able to get the installation to happen on four window panes in just over an hour - would have been faster if these were not double paned upstairs windows requiring outside install while standing on the roof. We already notice less heat in the evenings from these west facing windows.So far so good. Taking away one star since the film does curl at the edges. I used transparent scotch tape to take care of the problem.