These are very nice. They are self/soft-close and really maximize space, especially in a deep pantry cabinet like I'm using them. Overall, I think the way they're set up to install is good.Now, on to the caveat, since it's really important. I didn't dock a star for this because they are very nice. If you are going to install these on an adjustable shelf in your cabinet (rather than the fixed bottom parts), there are 3 things you need to know, especially for framed cabinets.First, you have to install the mounting guides (the plywood pieces) 1/8" off the edges of the shelf. BUT, if your cabinet is anything like mine, they then won't fit into place, so you actually need to trim at least one side 1/8" (I was able to get mine in place after trimming one side). Cutting something only 1/8" is...difficult if you don't have certain power tools, so it's something to be very aware of if you have a limited tool supply at home. Hardware stores will generally refuse to make "precision cuts" like that, since they're hard to get right. Me? I used a dremmel tool with the tiny saw blade and...got it close enough to perfect. I also used one of the two front screws to affix the board to the shelf, since the board is too long for a movable shelf (I used the other to attach the rails to the mounting guide board).Second, you'll need to trim the front to go around your cabinet facing. Dremmel saw again. That was easy enough to do, probably could pull it off with something like a hacksaw.Third, there are brackets in the box, but the instructions don't say what they're for. They're to fix the cabinet shelf to the rear of the cabinet. If you don't do that, then the cabinet shelf will pull out with this shelf, and it will tip.Finally, though the instructions don't say to do it, I would recommend drilling pilot holes for installation.If you're not very handy, you might find this difficult to install on a movable shelf. But compared to other pull-outs I've installed, it was the most complete in terms of guiding you to install it correctly and included hardware (you can see I have a different type of pull out just below this, and that one is getting 4 stars because it didn't include some of the stuff this one did), again is actually soft/self-close, and is built really well out of apparently quality materials, so I'm not going to dock a star, though I am close to doing so with the complications.