Atlantic Water Gardens Scupper Waterfall Spillway, Stainless Steel, 36-Inch 304 Stainless Steel Spillways provide an enticing and durable focal point for freshwater applications in the hardscape. Made for pondless, fountain applications, they are not intended for use in water gardens, ponds or other locations with plant or aquatic life, including fish. Atlantic Spillways replace 4 inch wall blocks for easy and convenient installation in garden wall block construction. The spillways feature a load bearing body design. They have a non-clogging weir for open water basin installations and decreased maintenance. Enhance any vertical wall installation. Heavy gauge construction from 304 stainless steel provides ageless durability. The maximum falls height above a basin is 24 inches for the 12 inch spillway, 30 inches for the 24 inch spillway and 36 inches for the 36 inch spillway. (A basin is not included.)