This was a much needed update my garage needed. It was tough to install, even with silicon WD40, but once it was in the grooves by about a couple feet, it stopped slipping out of said grooves. I can see why we they suggest two people to install, but I did with as one. You will push and pull for maybe 20 to 30 minutes, but when it is done, the seal will be the reward that you have earned. It appears to be of good quality. The first couple inches of one of the gripping sides did rip when I tried to get it in the track, but as I said, after that, it went on about as smooth as it could be. I was a bit rough with the install by pulling and stretching, but the 3 inches forward 2 inches back routine does pay off in about the time I stated.