Product review (2 stars): Would be great if not for the raised "x" bars/ridges in the center.
Overall, this is a pretty good dishwasher drip pan/tray.  It is plastic but pretty sturdy.  It did not crack during installation despite moving the dishwasher around a bunch during installation.  The size barely fit out space but did require some simple cutting with a Dremel tool which did the job just fine.  The design makes sense with the open front end so that water will come out the front, where I have my water sensor located (would not fit under the dishwasher anyway).

Why the 2 stars?  Well, as you can see in the picture there are four raised "bars" (or "ridges") in an "x" pattern.  I have not idea what purpose they serve as they are not needed to direct water on the tray nor does it seem to increase the rigidity or strength of the tray.  But what it does do is effectively raise the height of the tray by another couple millimeters, which on top of the tray itself makes the effective height about 5mm.

Now, if you have a dishwasher space that does not have a lot of vertical space, those "x" bars make it difficult to fit your dishwasher in properly.  Ours, despite spending over an hour trying, could not be set back level (front to back), with the front tilting slightly forward.  This was after the dishwasher legs were properly adjusted many times.

In the end, it's a very good tray for a cheap price that has a potentially problematic flaw with the raised "x" bars on the surface that can make your dishwasher not fit properly after installed.