This 11-foot commercial grade umbrella is a top seller due to its heavy-duty construction. It is designed to meet the demands of both residential and commercial owners. The umbrella features a robust aluminum frame that is built to withstand tough commercial conditions. The two-section aluminum pole has a 0.08 inch wall thickness, providing superior stability. The umbrella also boasts a fiberglass rib framework, further enhancing its durability. The pulley lift system is simple and efficient, making it easy to use. What sets this umbrella apart is its three-year warranty on the fiberglass ribs, which is longer than the standard one-year warranty. With this umbrella, you get the best of both worlds - a resilient and user-friendly design that can withstand any challenge.- Commercial grade design for durability and longevity- Extra-large 11 foot diameter canopy for ample shade coverage- Easy push-lift system for effortless opening and closing- 8 heavy duty fiberglass ribs for superior stability in windy conditions- Aluminum hub and housing, along with stainless steel hardware and pulleys, for added strength and resistance to rust and corrosion