This heavy duty top seller 11 foot commercial grade umbrella offers all the features a residential or commercial owner demand with a robust, commercial grade aluminum frame. The two-section aluminum pole with a 0.08 inch wall thickness and fiberglass rib framework has superior stability and is perfect for demanding commercial conditions. The strong aluminum pole frame is matched by a simple and efficient pulley lift system, which compliments a resilient and easy to use umbrella. One of the key benefits to this umbrella is a three year warranty on the fiberglass ribs as opposed to your standard one year warranty. This umbrella will hold up against anything you throw at it; it has the benefits of both worlds.