Mechanno builders delight. Comes completely unassembled in over 30 pieces, additionally some 50+ screws to attend to. Instructions are China to English and pictures do not match the actual product all of the time, so you need to extrapolate/guess what they are asking you to do. It took 3 adults, 2 hours to assemble the product with many head scratching moments. So it you are doing this by yourself, set aside 6 hours Of real concern was the instructions on the placement of the gasket seal between the glass tube and the chassis. Picture provided of what was needed was not clear or accurate. It makes me wonder if this part was assembled incorrectly how safe the heater would be. Heater, once assembled, looks good is a solid build and has worked without issue.