Duck Brand Window Insulation Kit - Winter Seal Kit Fits up to 10 Windows - Rolled Shrink Film Cuts to Size for Easy Indoor Installation - Tape Included - 62 in. by 420 in.- Clear

Works well, easy to install, lasted through the winter. Helped keep the house several degrees warmer.

I’m impressed with how well the Duck Brand Window Insulation Kit performs. The film is easy to cut, the tape adheres firmly, and installation was straightforward — just follow the steps and use a hair dryer to tighten the film. Once in place, it becomes nearly invisible and creates a tight seal that really blocks out drafts. Within a day, I could feel a difference in temperature near my windows, and my heating system doesn’t have to work as hard. It’s especially useful for older windows or rental spaces where you can’t fully replace the glass. You get enough material to cover up to 10 windows, which makes it a great value. Overall, this kit does exactly what it promises — keeps warm air in, keeps cold air out, and saves on energy costs. Highly recommended for winter prep.

This product is amazing and you will be asking yourself why you didn't get it sooner. My house is considerably warmer now with these insulation kits installed. THEY REALLY WORK ! I used a laser thermometer on my windows, before and after. I had a 3-6F degree temperature increase on average with the window film. I actually turned my thermostat down on my gas furnace by a few degrees which will make a huge difference in my bill over the entire winter. I have to admit, I was always skeptical about these, but they really do work. They aren't bad to install. All you need is a pair of scissors and a hair dryer. I got a good rhythm going and did 14 windows. I accidentally tore a hole in my first piece of film I cut. But you really can do 15 windows with it. First, I moved my curtains aside. Then I cleaned my windows and the frame with Windex. Next, this to me was the hardest part and that was putting the tape on. Separating the clear double sized tape from the white covering was hard for me because my nails are short. Once I did that, I folded the white cover part back about 1/4 inch forming a tiny tab, then placed the tape across the top of the frame. Then I did the the sides. And the bottom of the window last. I pulled the white cover tab I made off of each piece before moving on to the next section. So here's where I made my mistake on the first one. I accidentally unfolded the roll first. What you need to do is roll the plastic out as it is right from the roll without unfolding it. Measure your window across where the tape is and give an inch or two on either side. Then make your cut. Unfold the plastic and start placing it on the tape at the top. Then do your sides and follow up with the bottom. Now you're ready to shrink wrap it using your hair dryer. Set the hair dryer on the high setting and move the dryer across the film slowly. Keep it moving. Once the film heats up you will see the film start to shrink. Keep the hair dryer moving. Don't let it sit to long in once place or you could possibly burn a hole in the plastic. It helps to have a lot of light in the room to spot the wrinkles. They will all come out. Just be patient. And when you're done, it will look amazing ! Tight as a drum and just like a pane of glass ! I used this product along with painters tape to tape the seams of the windows and foam outlet covers to stop any drafts from coming in.

We use this product every year. Normally I remember where I store it for next year, this year I didn’t so we bought more. It’s really easy to work with — just measure the window, cut plastic slightly bigger and use the tape to secure it. Heat gun/ blow dryer to shrink wrap it. This year, one of our windows in the sunroom wouldn’t stay up. Because we had “shrink wrapped” it, there wasn’t much excess plastic to adjust the tape. Rather than cut a new piece, we just left it but we’re a little disappointed. Not sure if it’s the material the tape is being stuck too, or if there’s too much moisture in that corner. We’ll try again next year but that’s the only reason it wasn’t 5 stars.

I purchase this item every year to put over the windows in my mobile home each fall. It helps with keeping the heat in and the cold out. I will be purchasing another this year. I love the quality of this product, and it fits all of my windows. Installation is easy.

I was a little nervous to install this myself, but it ended up being pretty easy. I took my time and moved slowly to make sure I did it correctly, and everything worked as expected. The box did arrive ripped, but I didn’t mind since all the pieces were still inside. It may have been a returned package, but it didn’t affect the product at all. The plastic sticks well to the adhesive, and when I used a blow dryer, it shrank just like it’s supposed to and became nice and tight. I’ve definitely noticed a difference in my bedroom. There’s no longer a draft, and I don’t find myself turning up the heat as often. That alone makes this a huge win and a big plus for me!

Was going to give this 5 stars, but ran into a rather big problem... We're renting a house that was built in the 50's and wasn't maintained very well. Last December our power bill increased significantly trying to keep the old place warm. So this year we decided to give these a try. We started with the bedroom; which is always 4 degrees off from the rest of the house and has three medium windows. At first, major success! Finally that room was the same temperature as the rest of the house. Then, slowly and oddly, it seemed to stop working. Today we opened the blinds to realize that the tape had failed and large gaps were present; separating the heat-shrink wrap from the window and completed defeating the purpose. Going to go to Walmart tomorrow and try to find bigger and better double-sided tape. NOT HAPPY that I'm going to be redoing all of those windows and "wasting" that heat-shrink wrap. It's easy enough to apply, but that's still having to do a job twice over for no good reason with an additional expense. TLDR: Shrink wrap works, double-sided tape is too weak. Either try a different kit or buy your own tape.

They help me a lot every year! I live in a 1977 mobile home with original windows. I put these up every year because it feels like a wind tunnel every winter. Easy enough to put on but helps tremendously with drafts and keeping the warmth in. This is my go to every winter.

I tried a few brands of window film and definitely had the best results with this one. You cannot see it unless looking very closely. The tape sticks great and I have not had any loosen over at least a month, as I did with another brand within one day. With cold weather and single glazed windows this made a difference to loss of heat. Not incredibly but enough that it was well worth it. Instuctions are good but watching a video made it much more clear and turned out to be quite easy. I left mine overnight before using a hairdryer to tighten to plastic (which takes out all wrinkles! It's quite amazing and satisfying) and trimming the edges the following day. Cannot tell it is there, especially on white window frames.

Attention au format qui n'est pas très adapté aux grandes vitres. Pas facile a installer de surcroît. Pas convaincu non plus de l'efficacité. Pour le reste, le produit est conforme a la description.

Having done some research it seemed the Duck version of this was the one to go for. Great tape, super clear film. It’s tricky to install but that in its nature as window film. End result though is excellent and it’s really helping to keep my old draughty Victorian house warm.

J’ai utilisé ce lot de kits d’isolation Duck pour mes fenêtres cet hiver, et le résultat est vraiment excellent. L’installation est rapide et simple, même pour quelqu’un qui n’est pas bricoleur. Le film plastique crée une barrière efficace contre les courants d’air et aide à garder la chaleur à l’intérieur. J’ai vraiment constaté une différence au niveau du confort thermique et de la facture de chauffage. Les kits sont bien dimensionnés et il y en a assez pour plusieurs fenêtres, ce qui est très pratique. C’est une solution économique et efficace que je recommande vivement pour améliorer l’isolation sans gros travaux.

Funktioniert super