The Sunjoy Aluminum Pergola is designed with state-of-the-art technology making it the perfect outdoor structure to add functionality as well as beauty anywhere you put it.Can't shatter after being hit with rocks; some parts could eventually rust if not well taken care of. It is an investment in long-term use.Cast from high-quality aluminum, this pergola is resistant to allmorrosion and durable. Its major uses are providing shade for either meals or just a restfulmoment in the out of doors, forming a defined outdoor living space which may or not also be secured by walls (thus keeping insects outside the screens), and furnishing a reference point for climbing plants.Built for the future: it can take what nature dishes out, thanks tofeatures like a powder-coated finish and full support at every joint, fromdownward braces right up to the top.Ideal for residential use, in companies meant to entertain, and public places.