The Desa 409920 is a 90,000 BTU portable heater designed for efficient and effective space heating. Its powerful heating capacity makes it suitable for use in large areas such as workshops, garages, construction sites, and other industrial or commercial spaces. With its adjustable thermostat, you can set the desired temperature and maintain a comfortable warmth level. The safety features, including a safety control system and automatic shut-off, ensure safe and reliable operation.