This is a great piece and fair play to the manufacturer for the awesome photography and setup. If that was in my garden it would be full of kids toys, with crayon up the sides. This comes with 5 hanging support poles which gives the canopy the rippled wavey effect. It's made from solid metal so very reliable and can be used against a wall or above a door. There's a bit of a Greek holiday vibe about this one
 
The dimensions of this pergola are 294L x 294W x 226H cm. Here (with a hyperlink) are the assembly instructions