This unit actually relies on the silicone caulking for structural integrity.  Some parts have to be forced to get screw holes to align.   Had to drill out a couple of missing holes and trim one glazing unit to fit.  The door hinge is not the continuous hinge shown in product picture.  It doesn’t come with any method for anchoring.  The roof vent has a flimsy bracket for propping out but had no means to lock down and therefore is just waiting for the right wind to rip it off.  The plastic glazing has a clear film on one side and a white film on the other side.  Instructions say side with removable film faces out but that doesn’t tell you anything.  The door is a head banger for anyone over 5.5 feet tall.  The door has no handles and the latch has a minor possibility of being left in a position to be locked inside.  I added a wooden base to raise the head room and wood side header beam to absorb side wall roof load deflection and anchor roof to the base.