InterlockingRock® PANELS work in multiples to create a continuous, uninterrupted sculptural wall. Proprietary, steel-reinforced joints interlock to ensure accurate panel-to-panel alignment and superior joint stability, while multiple layers of gypsum with a glass fiber matrix ensure durability. Cast entirely of mineral, the line contains no plastics, no VOCs and no urea-formaldehyde. These repeating panels can accommodate areas of any size and can be trimmed easily on-site.