I bought this a month ago and assembled it myself. The step-by-step instructions were accurate and easy to follow. All parts were neatly packaged and clearly labeled. Total assembly time was about 2-hours. Some reviews said that the assembly process was complex, but my experience was that if you patiently read and follow the instructions you will get a good assembly.
                    The unit works perfectly and heats a 15-foot diameter circle. I'm happy with it and am ordering a 2nd one.