I used this solar collector (parabola) a few times. It hasn't been heated in a fire, so it remains in relatively clean condition. [Reason for selling] I used this Colodutch to cook: ● Sausages ● Mackerel pike ● Corn ● Asparagus ● Sweet potatoes and my curiosity has been satisfied, so I've decided to sell it. Please purchase if you don't mind that it's used. I will ship it quickly with a tracking number.