plywood: film: black and brown/ Black Anti-slip and brown Anti-slip specification: 1220?440?/12/15/18/21/24/27 (mm) 1250?500?/12/15/18/21/24/27 (mm) (1)Full Poplar core, WBP glue (2)Birch face/back with poplar core, WBP glue (3)Birch and poplar core, WBP glue (4)Full Birch core and WBP glue