The Dyna-Glo Portable Forced Air Heater generates instant heat for construction sites, industrial workspaces, agricultural buildings, outdoor events, and other ventilated spaces. Rated at 400,000 BTUs with a 1,400-CFM blower, the heats a maximum of 8,500 square feet for a period of 9.5 hours. This is powered by 1-K kerosene or #1 diesel and fuel oil and has a 29-gallon fuel tank with a run-time fuel gauge that displays how long the unit will run. This unit is easy to use with a one-touch power switch, and it is fully portable with flat-free, wheels for easy transport between sites. It is one of the safest heaters available, with a flameout sensor and automatic fuel and overheats shutoff protection. This heater is engineered with digital diagnostics, a secondary power outlet which provides the ability to plug-in tools and other appliances, a cord wrap for neat storage of an extension cord (not included) and an air pressure gauge for easy pressure adjustment. This product is CSA Certified USA/C and meets all applicable U.S. and Canadian national standards, which cover important safety and quality requirements. The motor is UL approved which means it has been evaluated to globally recognized standards for fire, electric shock, injury to persons and evaluated for safety of rotating machinery. The Dyna-Glo Portable Forced Air Heater comes with a 1-year limited warranty that protects against defects in materials and workmanship. GHP Group, Inc. is an industry leader in manufacturing electric fireplaces, fireplace glass doors, fireplace accessories, electric log sets, portable heating products, and barbecue grills.