Duck Shrink Film Window Insulation Kit, Indoor, 10 Pack, 62 in. x 420 in.

I like the film a lot! The installation was real easy and quick. I have old wood windows in my apartment which are nowhere near to be insulated and I constantly have moisture accumulating on them every morning and dripping down. So, the film on bottom of my windows have fallen off because of moister dripping down, but I have put a duck tape on the bottom and it holds! Be careful installing the film, do not over use the blow dryer otherwise the film will shrink so much that it will come off the sticky tape! But you wont believe how much cold air that film holds, on a windy nights I can just hear a wind blowing through my windows and making the film shake, but guess what? None of that cold air is coming through! Wonderful way to save on winter electric bills! I highly recommend it!

This is a high quality product for a reasonable price. The materials are properly designed and of practical effective for the purpose. I feel that I have lessened the cold air intrusion of my house. The furnace does not turn on as frequent as before I applied this product on my windows. Thank you.