I'm going to guess that when RTI sends product out in
semi trailers that they are quite comfortable sending
them across the stinkin' desert without specifying refrigerated
units, nor even specifying that their stuff has to be
on the bottom away from the heat from the sun. Since
RTI stuff generates hardly any of its own heat, I think
you could relax about that. Or, heck, call 'em up and
see how hot a room they can be in!