The Dyna-Glo 25,000 BTU portable convection gas-fired heater is are designed to provide a consistent, long-term solution for space heating. Ideal for workshops or construction sites, convection heaters operate using a standard 20-lb. liquid propane tank (tank sold separately). These heaters do not require electricity for operation. Heats an area up to 600 square feet. Regulator and regulator assembly included.