Available in up to 4m lengths, the guttering must slope gently downwards at least 12mm every 3m towards the running outlet in order to provide effective drainage. It should be fixed at 1m intervals with a gutter support bracket. The sleek lines and modern styling of the Prostyle 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 Prostyle system is ideally suited to traditionally styled new build projects. Features Authentic detailing and finish on guttering, downpipe, hoppers and fittings. Fully compatible with the Cast Iron Style Soil System and traditional Cast Iron. Available in six colour options: Classic Black, Oxford Blue, Olive Green, Graphite Grey, Sandstone, Porcelain White.