Our cork flooring tile, used in glue-down applications, comes standard in nominal 12" x 24" (30cm x 60cm) or 12" x 12" (30cm x 30xm) sizes. Both are 8mm (5/16") thick. Our cork floating floors come in nominally 12" x 36" (30cm x 91cm) click-together panels, which are 10mm (3/8") thick (3mm cork surface on a 6mm core with a 1mm integrated cork underlayment).