Motor vans are isothermal

Isothermal motor van - very specific type of a van which allows to transport the freights demanding high temperature conditions.
The essence of an isothermal van consists both in full tightness of a cargo compartment, and in specific materials of which it is made, but the huge role and possibly main is played by heatexchange installation capable in the summer to cool, and in the winter, respectively, to heat air mass in a cargo compartment.