It arrived very quickly.  I could put them together in 15 minutes.  The enclosed instruction was easy to follow.  It appears it's well built.  I loved it so much that I ordered another one next day.  This is exactly what I wanted.  The summer is very short in where I live.  The temperature drops to 50s in August.  But I'm hoping I'd harvest squash and lettuce into October.  You can easily fit a dozen milk crates or 5-gallon-size pots inside, as shown in my photos.