Cascade Cast Iron Style Water Butt Stand - Black Used in conjunction with a Water Butt to allow it to stand. Description The sleek lines and modern styling of the Cast Iron Style Rainwater System provide a more contemporary finish with a quality Cast Iron look and feel. Offering a modern twist on heritage styling, the cast iron style system is ideally suited to traditionally styled new build projects. Dimensions Width - 730mm. Depth - 480mm. Height - 300mm.