Re:What is this
That's pretty cool how they took the speed rack and modified it to go into a reach in. I have worked with a couple True branded coolers that had sheet pan racks built in and they were great-especially if you rely on using sheet pans for a variety of things.
Google True Bun Pan Tray and there are a couple links. But I bet buying a used speed rack and modifying it would be way cheaper. Cheers!!