I am so happy and satisfied about this 12x20 pergola. I have researched many other similar products and finally made the decision on this one. This one is all aluminum in a great price. Many thanks to Maggie for the help in the purchasing process. Very responsive communication and great customer service. The product came in total 5 boxes. All parts were well packaged and no damage found. The step by step installation manual was very clear. I did need another person to help me assemble the frames. Then I was able to finish the rest of project. I was able to get it all done in a few hours. I love it! It is sturdy and solid! The louver operation is smooth. I definitely would recommend this product to those of you who are looking for great quality pergola!