It was a pain and a half to install.
We almost put it through the other side of the garage when the two towers got away from us (4 guys) when we were pulling it out of the truck.
Then standing them up and aligning them was not much fun. They each have 8-12 holes that go into the concrete that need drilled out (required buying a new hammer drill).
It took about 4 days to get it all together and working. Not a job for an amateur in my opinion.
for some more information.