Here’s my newest find that I picked up over the weekend. I had to drive two hours to get it, but it was well worth it. The console is a little beat up from people cleaning it but the inside still smells like new dishwasher, and there was no rust except for a little bit around the rinse aid dispenser …. It needs a new inlet valve and a rinse aid cap . Even came with the manuals … I’m probably going to install it in my kitchen and take out the 22 series that I currently have… My main question is what is the difference between the 21 and 22 series ?