The following web page shows MDA Splitter Nuc Boxes stacked 3 high.
http://www.indiansummerhoneyfarm.com/ click on the "nucleus hive" link...
The photo shows 5-frame nucs ready "for the trip north for deliveries in Illinois and Wisconsin".
The MDA Splitter Nuc Boxes look a little flimsy for a trip like that. Perhaps some boiled linseed oil would help to stiffen them up, and provide some weather resistance.
The Mann Lake boxes look really nice, whereas the MDA's are very inexpensive. Ask Mann Lake if there is a "Box Certificate" stamp on their nuc boxes. If so ask what the Edge Crush Test rating is.
If the MDA Splitter boxes can make the trip from Florida 3-high, I'm sure the Mann Lake nucs can travel pretty well.
Have you seen this: http://www.youtube.com/watch?v=HEqEG...eature=related it's a you tube video of a guy folding up a Mann Lake nuc.
BeeCurious............... Trying to think inside the box...