The Powerblanket® Hot Box, with patented GreenHeat™ technology, saves money by keeping products from overheating or freezing. For example, Vern Fiehler, of Quick Road Repair in Alaska, saved money by keeping his product from burning up, which is what happened with his old method. He met with the field maintenance crew of the Juneau Alaska International Airport to demonstrate his product called Instant Road Repair (IRR). For his demonstration, he needed to bring the IRR up to working temperature, and used a forced air ceramic heater to do so. Unfortunately, during the presentation, the product was not performing well. To his surprise, Vern discovered that the product overheated 40°F / 22°C past its maximum temperature. That cost him a pallet of product and embarrassed him. Since then, Vern uses the Powerblanket® Hot Box. Designed with structural integrity, including an internal freestanding frame, the Hot Box can be easily assembled, disassembled, and reassembled. This makes it ideal for transporting, job site heating, remote location use, and other heating requirements. Adjustable thermostatic controllers control for the desired temperature.