Re: Nice NUC box
I use Mann Lake for most of my supplies. Their NUC boxes are fine, but they do not have a queen excluder, inner cover or telescoping cover for a NUC :-/
Dadant does offer those accessories for the NUC hive. Only down side is that Dadant's equipment is about a quarter inch narrower than Mann Lake equipment so I don't like to interchange them. Go exclusively with Dadant and you will be fine. I have judged Mann Lake wood quality and fitment to be slightly better than the Dadant kits I've assembled this year.
...We don't see things as they are, we see things as WE are...