Blockboard (a.k.a. Latté) is composed of wooden rows aligned over each other and contained between two layers of plywood. Similar to plywood, the surface can be ordinary (which has 15mm, 16mm or 18mm thickness), veneer (which has 16mm or 18mm thickness) or polyester (which is 18mm thick). Veneer latté can be one faced or two faced. Polyester latté is always two faced, and could come in any color.