Frost KingV4825/4A Crystal Clear Vinyl Sheeting, Clear, 48" x 25' x 4mil.

I bought a greenhouse from harbor freight a few years ago and attached it to my house using the french door as an entrance. It was pretty drafty and costly to heat . After wrapping the greenhouse with this product it cut my heating cost in half

Does a great job keeping out the cold. it is clear can see right through it.

I love how clear this is. I have the type of dog door insert that goes into your sliding door track. Wind comes through the sliding door because of it not being closed as it should be, but this solves the problem. I put it up but stopped short of the dog door. Even though it is not covering the whole door, with the dog door not being covered, so the dogs can go in and out, this works pretty well in keeping the wind and cold out when it is very cold and windy. I think it is a bit overpriced though. The plastic ones like this at the store were not so clear but they were much more inexpensive. I guess you get what you pay for, but I think if the stores sold this it would be cheaper.

We have a screened in porch that we divided in two so I could use the smaller side as a room to paint in year round. We had made homemade storm windows for it years ago, but they've broken down with years of use and needed to be replaced. I wasn't sure how well this product would work, but I purchased screen frame kits in the hopes that I could attach the vinyl the same way one would attach screen to the frames. It ended up working wonderfully! It was very flexible and relatively easy to work with. I've added pictures of what it looks like from the inside out and looking in from the outside. It really does look like glass, and it's holding in heat so the room is very easy to keep warm. I also added a picture to show what the side looks like compared to the front windows. The reason I did that was to show a comparison between the more expensive flex o glass and this product. I needed 48" wide vinyl for the sides and 36" for the front. It happened that the 48" was cheaper with frost king, but the Frost King 36" wasn't available, so I ordered that size through flex o glass. I really can't tell the difference, as both products are very strong feeling, very flexible and very clear. The frost king was about half the price as the flex o glass, so if you're wondering how the two compare, I'd say they're very similar, other than in price. The flex o glass may be slightly thicker, but other than that, very similar. I haven't been through a bitter cold winter with them yet, so time will tell if both products hold up the same, but so far, the frost king seems like a better buy (although the flex o glass is a great product as well). I'm so pleased with how it turned out, I ordered more of this product to do the larger screened in porch for the winter. It'll be nice to sit out there on nice winter days and be able to watch the wildlife and snow without actually being in the snow.

Use this to enclose my front porch to help keep cold out in winter, and pine needles, pollen, and leaves out the rest of the year! Also keeps birds from flying into hard windows!

This is a very good product. It IS crystal clear. Very easy to cut and apply on windows. It clings on to the glass on my windows. I just smooth it out with my hand to get the air bubbles out. Going to get more. Highly recommend.

NOT crystal clear, has scuff lines every 4 inches . I contacted the manufacturer and they asked for details. Was likely a form response since they were talking about window kits when I was not happy about the blemishes every 4 inches on a roll that is supposed to be crystal clear. I gave them the details and since I used some I could not return it. The response was they would direct my complaint to the proper department. The was it...no more response and no satisfaction. I have used these rolls before with no problems but not pleased.

Crystal clean would buy again, closed off my screened in porch for the winter and worked great.