Tall 91" commercial patio heater - This patio heater is great for commercial establishments, but can also be used for a home residence as well. Its output is 38,000 BTU, but puts out more heat with less propane usage, and heats up to a 15' radius which makes this heater more efficient. It comes with an anti-tilt device and thermocouple for safety in case the heater should happen to tip over. This heater also comes with built in wheels for easy mobility.