It develops a rust patina on the outside but then stops corroding, so you get the attractive rusted patina colour but without compromising on the quality or longevity of the final product. Dimensions & Weight: Medium: 0.65m x 0.44m x 1.45m high - 40kg. Large: 0.87m x 0.74m x 1.9m high - 80kg. Cooking grills and spark arrestors are available for