The Fostoria Heat Wave is safe, easy to operate, and saves valuable time on any job site. This odorless, flameless, portable electric heater provides the climate control you need for interior jobs without wasting time refueling. The popular Salamander models eliminate the need for dangerous fuel storage or the threat of poisoning from combustion by-products. Operation is simple; the Heat Wave 1100 CFM fan pushes ambient air over multiple heat coils while also recirculating air within the room until it reaches the temperature level set with the unit thermostat. Safety yellow heater enclosure. 40 - 100F thermostat adjustment.