This product is only for the single older style Clopay garage doors. Check your track before ordering!Arrived faster than expected and well packaged. There are no instructions but it’s pretty straight forward install.Material seems a little thinner than the old one I took out. The rubber seal is very pliable amd looks of good quality.In my install the hardest part was trying to get the old seal out of the track. My old seal was 24 years old and it was hard and stuck on that track. I had to remove the aluminum track and clean it up a bit, than I sprayed silicone on the track and installed the seal.It’s fairly easy on an 8 foot door. Getting the track off in my case was also easy as it’s held up by a few self tapping screws. Suggest you use new ones if yours are rusty and perhaps get the next size up screw. You may also have a screw at the end of the track on the bottom to keep the seal from moving. Mine had it and I had to use a screw extractor as the head was very rusty.I have two doors a single and a double. The process is the same for the double door, but, it goes faster if you have help as one person pulls on the seal and the other guides it in.Careful with the double door track as it easily bends if you take it off the garage door. I had to man handle the old seal and use a blade to cut it and get it off. Again that will most likely be the hardest part of the install. I will not say it was easy to install, but with a little time and patience it can be done.I had no need to use backer rod as some have suggested. I purchased two double four deals as the difference is only around 5 bucks between the single and double price. I have an extra 8 foot should I need it later on. One last tip, leave an inch or two on each end as the seal may shrink a little and I find it seals the space between the door and the wall much better.Not five stars as the seal feels much thinner than my old one. Time will tell. There are a few sellers, I ordered from Unique Supply.Good luck