Instruction were easy to follow and I was able to assemble it myself.  It sufficiently protected my plants when the temperatures dropped below freezing but as I live in Texas where the below freezing temperatures do not last for any length of time I don't know how it would perform in the cold for an extended period of time like Minnesota.  My one complaint is that the plastic fits too tightly around the frame making the zipper an area of stress.  Eventually the plastic peels away from the fabric of the zipper so it is no longer sufficiently sealed against the elements so to protect your plants - you have to buy a new one each year.