The stainless steel pro series is truly a professional grade patio heater. The pro series was created for the rigors of commercial use which require extreme durability and dependability. However, the pro series is ideal for residential users who demand the best patio heater made. Its thicker gauge #304 heavy duty stainless steel construction will keep this patio heater functional for a lifetime. The one piece pole and 5pc. Heavy duty reflector make this unit sturdy. We’ve designed the head assembly with an easy access panel for quick and simple exchange of components. The pro series comes with our “”never down”” replacement warranty, with defective parts covered for the life of the unit, so you’ll always have a working patio heater. This high quality patio heater features a tip over protection system for safety, and a reliable electronic single stage ignition system. The attached heavy duty wheels provide easy mobility. The stainless steel pro series patio heater will be the last patio heater you own. Troubleshooting: some models take 3-5 minutes for the propane to purge the air from the gas hose. Please allow plenty time for this process to occur before pressing the igniter button. Warning: this product can expose you to chemicals including carbon monoxide which is known to the state of california to cause birth defects or other reproductive harm. For more information go to www.P65warnings.Ca.Gov.