Yes, Jocelyn, they are very firmly attached. My husband is quite dedicated to sturdiness and I think they could hold a lot more weight.
One rack is screwed well into the ceiling joists (is that the right word??) and the other is screwed to a board that is screwed into the joists. That was done in order to center it the way I wanted.
Anyway, I love the setup. It is so much easier to get to my pans that I use every day.