Bobe Fire and Water 12" Radius Copper Scupper comes with a standard 1-1/2" female threaded 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.

<p>Bobe Fire and Water 18" Smooth Flow Stainless Scuppers are made to withstand the elements, with no plastic used in their design. For a placid, smooth flow, internal baffles produce clear, bubble free cascading water at a rate of 25-30 gpm. The unique smooth flow design also prevents clogging, sagging, and warping. Female threaded inlet in back of scupper is standard 1.5" This elegant scupper is a beautiful complement to a custom made spa spillway. Appears flush with surrounding wall for pleasant aesthetic.</p>