Not recommended
I have an allotment and have assembled two secondhand greenhouses with minimum effort and no instructions, so readily agreed to help my son in law with a new Halls greenhouse. From a technical engineering background I thought it would be an absolute doddle. The instructions are incomprehensible and poorly printed so that there is no differentiation between component joining pieces: could be U, L, V, who knows? You are advised to build the frame first and then install glass, but it’s impossible as there’s no rigidity, and you need this on larger models as you build two structures which must then marry up. The ‘toughened’ glass is incredibly fragile; we were responsible for a piece breaking, but two large sheets simply disintegrated without any shock. So far, 3 competent men, have spent 27 frustrating hours, and the thing is still not finished. I have no positive remarks to make. It seems to be based on the Rubik’s cube idea, eventually we should triumph. But not yet. The cheap, secondhand models I erected (one took only an afternoon) went together without hassle, and will be fit for purpose for years to come.