Really solid.  It was a little more difficult to install than I expected.  I couldn't get the drawer part separated from the tracks so I had to pull the shelf out of the cabinet and install it, then put the entire thing, with the drawer screwed in place,  back in.  Not super easy.  It's really heavy. This is good - it's never going to break - but installing it in a higher up wall cabinet that is very deep, was not as easy as it seems it will be on the instructions.