This is a fairly easy to assemble item. It took me about 45 minutes because I had difficulty with a couple of the steps. Maybe an hour tops.
Bought it to heat a table on the deck for autumn evenings. On high it puts out a lot of heat. We ran it at the low setting for over an hour on a 1 pound tank.
The only helpful thing that it is missing (and I don't know any propane heater that has this) is some kind of indicator as to how much fuel is left in a tank.
The main reason I bought a table heater vs. the tall deck heater is portability. I can move this around where needed and bring inside if it's bad weather.