The manual describing how to make a door of all the pieces can be improved. I would have appreciated more scetches and fewer pictures (which are not very accurate). Luckily the door assembly is not very complex - it's an inner frame and an outer frame covering two sheets of Lexan in between and with a lot of clever reinforcements in all corners. All the pieces fit very well together with a high degree of precision cuts. Also, the Lexan plastic is very flexible and does not seem to crack easily.