Stable Design: Crossed post and beam construction, the four 6.7 x 6.7 inches wide aluminum feet with pre-drilled holes can help the Retractable Pergola stand stably on ground surfaces Upgraded Fabrics: The Outdoor Pergola is made of improved yarn-dyed fabric, more durable, UV resistant and fade resistant 5 Crossbeams: PURPLE LEAF rattan stand is made of aluminum frame with anti-rust treatment, durable and stable support Retractable Pergola: The 10' X 13' White Pergola allows you to adjust the amount of sunlight with ease by sliding its convertible roof For Installation: Recommending to use 1/4-inch expansion screws for mounting on wooden floors, concrete 3 inches deep or more, and concrete footings measuring (recommended over 50 lbs. per footing) 15x15x15 inches Imagine in a Outdoor area is situated under a beautiful white pergola, right in the middle of fresh seasonal flowers, permanent trees and shrubs.Put into nature, wash away troubles and tiredness. Angled ends on each of the top slats lend an exotic feel to this structure, while the white color retains its clean effect,and with a hint of Mediterranean. A white metal retractable pergola canopy offers you many sizes to support all your outdoor activities: house parties, outdoor dining, pools and more.