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By certification 
Made of 100% polyester that can be waterproof, long lasting, easy to clean.
Powder Coated Aluminum Pole(40mm Diameter aluminum pole) and 8 sturdy ribs provides stronger support. Includes single wind vent for stability.
9 feet diameter- Wide enough to your 42" to 54" round, square or rectangle table with 4 to 6 chairs.
Easy crank open function with push button tilt, keeping cool and comfortable from the sun.
This Patio Umbrella include Push Button Tilt/Crank.
http://www.mainpexint.com/
