Pro-Temp PT-47-TTC 47,000 BTU Propane Tank Top Heater&mdash;Variable Output, Silver VERSATILEgreat for work sites, ice fishing, camping, and tailgating TOUGHchrome emitter guard RELIABLEvariable BTU settings for heating up to 1175 square feet Unique wind-resistant frame, safety shut-off valve, tip-over switch 1-year warranty