Bobe Fire and Water 10" Radius Stainless Steel Scupper comes with a standard 1-1/2" female inlet in the rear. Grounding lug also located on the back. The sides of this scupper curve down to meet the lip, preventing water from spilling out the sides. If you enjoy how water flows over a rock waterfall, you'll love this scupper style, which is very similar - described as a choppy or bubbly, broken up flow.