I ordered this last summer and took a couple of weeks to put it together.  About a month past and the plastic boards started flying away! We found them and put it back together and applied flex tape to stabilize and seal the greenhouse.  Come fall and we put in our plants, thinking this greenhouse would maintain them.  We have discovered all our plants are dead!!  In addition, even some of he plastic boards have cracked!  I actually feel that this was a rip off 
And I find myself with a bunch of dead plants, some of which were with us years.... need to start over!