OK,
so finally i have some pics of how i built my little temp rack.



as you can see i just used peg board on the top. and its built so i can easily add more levels.

the white stuff is fanfold insulation. (styrofoam...) and i keep it pulled most of the way foward on top so that some cool air can vent as well as the warm air under the plywood (OSB)
the rest of it is built out of fern strip..

anyways..
do you have a link to the acu-rite product you mentiond?