I am very satisfied with the quality of the canopy build. I choose the Aluminum and luckily received a 3mm thickness. It might be worth it to request this and pay a bit extra for 3mm rather that 2mm. Everything went together well and it looks good. I had a number of questions before I ordered and a couple of questions during the build. The company was very responsive to the questions by way of the chat on the Alibaba Site. My friend's son helped me lift the canopy onto my truck and now he is going to order one. 

sent all the required dimensions but the product arrived out of spec. the seller compensated me 30% discount but I had to modify it to fit my vehicle. I also had to add weather strips in addition to what was already there because everything leaked. overall I am satisfied just with it fit my truck better.