From the picture that Walmart advertised, it showed cross brackets inside the roof for support. When I got the the gazebo and assembled it, there were no cross brackets nor were they stated on the instructions. I then called Aoxun and emailed a copy of my receipt, the picture of the gazebo advertised on Walmart's online site, and pictures of the gazebo I assembled. I got one call back stating that they were reviewing my email and would respond that night. I followed up with phones calls and emails but still no response after weeks have gone by. I live in Wisconsin and the roof on this gazebo will not be able to handle the amount of snow we get in the winter time. I will have to spend extra money in order to install make shift cross brackets in order to avoid a collapse of the gazebo. I would not recommend this for anyone who experiences any amount of snow. Poor customer service from Aoxun.