The unit I purchased didn't come with any accessories, but that's ok. We use it for different pot sizes, deli pan sizes, etc. Just buy the type of adapter plates, super pans, steamtable insets, etc. for your own personal needs.
I have no idea, but just call the folks at Tundra they can help with ANY question. (Actually, we have had one food warmer for over ten years and hasn't failed yet. Maybe we just got lucky, but the two other ones area just going fine without a hitch.)