Harbor Frieght used to also offer something similar, but it was one large piece, rather then several smaller pieces. All that I ever looked at, seemed to have a bunch of wasted space, size. I had one for a work tool cabinet but got rid of it for something else that fit my need better.
One friend years ago, took a scrap of plywood, and made something similar that they covered with some leftover carpet from some subwoofer project. Their cabinet at the time was some Taskforce, garage sale thing that they planned on making a wooden cabinet instead and figured they would screw that plywood board in one drawer when done.