The Schluter-Kerdi-Board-SN shower niche is a prefabricated niche made of Kerdi-Board panels. It can be inserted into Schluter-Kerdi and Schluter-Kerdi-Board wall assemblies. The niche includes a 1/2" (12.5mm) thick, 2" (50mm) wide bonding flange. It is available in four sizes. Larger models (12" x 20" and up) include a Kerdi-Board tablet that can be installed at any height to create a separate compartment.