Traditional and handmade Spanish terracotta tile made using all-natural elements fired in kilns fueled wholly by almond shell biomass, resulting in variations of unique, unrepeatable red and yellow coloring. Not recommended for exterior use in freeze/thaw climates. Note: Tile thickness varies by size and shape. Stocked sizes: 6x12", 4x8", 8x8", 12x12", 16x16". Others made to order.