QuickDrain WallDrain linear shower drains are unobtrusively built into the wall. Made of 18-gauge, 316L marine-grade stainless steel, the drain has a 12-gpm capacity for a 2-inch outlet; to accommodate shower sizes from 96 to 144 inches, drains can be linked together. Presloped PET panels for both curbed and curbless showers eliminate the need to float a pitched mud bed and wait for it to cure, and the system can be installed in less than one day, according to the manufacturer. quickdrain.com