It's a little more expensive than I'm willing to spend, but I used them to build a hidden sliding garage door using two hundred pounds of lumber and a frame with perforated panels/hardware hanging from it. They're fairly easy to install, but I didn't use the included track fittings for the simple reason that they weren't long enough for my horizontal door hanging application. I could use them as part of a sliding bookcase system for hidden storage or device access behind built-in bookshelves. But for what I use them for, they're great.