... ,rusty,gray 3: own factory 4: usage:roofing slat Culture stone slate is also called ledgestone, ... -21mm, 28-31mm etc300x300mm , 300x600mm400x400mm , 600x600mm600x900mm , 900x900mmB: Slate roofing tilesThickness: 5-7mm etc500x250mm , 400x200mm , 400x25mm300x300mm , 300x200mm , 300x15mmC ... flower pots, columns,slate blackboards, slate fountains, roofing slate etcUsage:Inside home or office decoration or ...