Walk away, these are terrible. It took my son and I over six hours to figure out how this goes together on the basis of instructions written in China by someone with very poor English skills. It took us another couple hours to get it well attached to our house. It’s really heavy, and so it needs house-structural support such as beams or masonry wall, and this is not easy to drill into — and if you want to extend it to the full 13 ft, you’ll need to mount it high enough to accommodate the angle which is a minimum of 5 degrees on paper but is really more like a minimum of 15 degree slant. We couldn’t mount it higher than about 7 feet, which makes the canopy 5 feet high at lowest point of extension. Not good. We made a huge mistake buying this, but you won’t realize that until it is too late to return it. We hope this review might make you think twice. It’s a very expensive umbrella that attaches to your wall. Be sure you want to give two days to it.