As everyone has said, the instructions are not very good. The frame has aluminum parts and steel parts. The main leg poles are aluminum, but the base of each pole is steel. Now that its together and up, we've had a rain storm. The gazebo held up fine in the rain, but there are 8 spots on the canopy where they sewed velcro to attach the canopy to the roof support poles and it leaks at each spot where there is a velcro strap on the canopy.  Overall, the gazbo seems strong, just disappointed on the velcro leak locations.  Also on other websites, this same canopy is sold by other names, so there's no telling who the real manufacturer is.