I purchased 2 heaters and they were very easy to assemble.  Everything fit together very nicely.  The instructions were clearly written.
In terms of performance, I was very pleased with the coverage.  Last weekend, with evening temperature in the high 40’s, we had guests who were very comfortable.
The only issue I had was during set up.  It took much longer than 1-2 minutes to get the propane to where it needed to go for ignition.  After several attempts was finally able to get these lamps fired up.