The Mr. Heater Buddy MH9BX Portable Radiant Heater in Yellow is a powerful gas and propane heater with a 9000-9999 BTU heating rating, making it ideal for heating areas up to 201-250 sq ft. This portable heater features a radiant heating system, adjustable heat settings, and an auto shut-off function for added safety. With a compact design and durable construction, this Mr. Heater Buddy is perfect for outdoor use and provides efficient heating with an annual fuel utilization efficiency of 95-100%.