We created Our Box with the concept of a Refrigerator inside the van…. our Box is made from Proprietary Patented design with Industrial materials that Pass Insulation standard for Industrial Freezers so our Vans can hold Frozen temps in the 112 Degree heat of mohavee desert, without stressing your Compressor to a point of brink. We build our vans in the factory located in Hot las Vegas and test it in the desert heat to ensure that it will do the job in any climate around the globe.