The design of this patio outdoor umbrella will make a fun atmosphere in any outdoor setting. Made of flexible steel, the 8 ribs structure make this umbrella is extremely durable and very sturdy. The sturdy construction ensures long-lasting durability, and the umbrella is also versatile enough to use professionally for outdoor functions or events. Covering it when not in use will prolong its life. This will help to minimize the fading effects of UV exposure and extend the vibrancy of your fabric. This umbrella can be installed in a patio umbrella table or in a freestanding umbrella base. Specification Aluminum Round Garden Parasol, w/ auto tilt and crank, w/o base Fabric: Durable Sunbrella acrylic fabric, Sun-proof, Water resistant, UV protection, Fade Resistant Canopy Shape: Round Size: 9ft Shade Diameter - Shade your 48" round, square or rectangle table with 4 to 6 chairs Overall height: 8.2 ft. Aluminum pole: 1.5 inch, Heavy-gauge and rust-free powder coated in Antique Bronze color finish Aluminum 8 ribs: 0.55 x 0.79 inch, Sturdy rust-fee powder coated frame in Antique Bronze color finish Frame: Rust-free powder coated Opening Mechanism: Tilt and Crank Air vent: Yes. It provides basic wind and heat venting Commercial/Residential: Both