Schluter Kerdi-Board 1/2" x 48" x 64" Substrate & Building Panel is an all-in-one solution designed to address common challenges faced by tile setters and home construction workers. This product functions as a tile substrate while being rigid enough to serve as a standalone building material. It a completely flat and entirely waterproof surface, making it the i substrate for wet applications such as showers and sink installations. Additionally, it is durable enough to withstand moderate impacts and resistant to temperature changes, providing a reliable and versatile building panel for various construction needs. Model Number: