Dick's Sporting Goods. We've had these a few years now. Take care of them, take the cover off when it rains so it doesn't pool and make sure they are put up when the wind kicks up, and they last a long time. We have 2 of them. Tilt them, angle them, move them around, use with the awning as an extension of the awning, even used them for a wedding reception outside once.
And then we added this to our portfolio of camping essentials. Got it through WalMart.com, and shipped to the hosue: