Review on 🌬️ 3M Indoor Window Insulator Kit - Window Insulation Film for Heat and Cold - 5.16 ft. x 17.5 ft. - Covers (5) 3 ft. by 5 ft. Windows by Steve Harris

Installed on half my windows today but there is an obvious difference. My apartment building is from the 70's and the windows are the worst. My bedroom was freezing cold when the door closed while the rest of the unit was 72 degrees. However, the tape can be a bit frustrating when adjusting the movie. There was a very handy video from 3M on how to properly thread the cords. All it took was a utility knife and clear tape. It is very convenient that you can adjust the blinds through the film! (photo included) *I highly recommend getting an exacto knife to trim off the excess and some masking tape or masking tape for those tricky corners/spots where the tape can't stick well. Don't worry if it accidentally gets punctured as any excess foil you cut off can be used to fix it! (Photo attached) Overall, I highly recommend this product. They helped me to do the big window that can be seen in my photos but I was only able to do half of it by myself.