size:1220x2440 915x2135 915x1830 material:poplar,hardwood,pine,birch face/back:red oak,white oak,birch,cherry,beech.okou size:1220x2440 915x2135 915x1830material:poplar,hardwood,pine,birchface/back:red oak,white oak,birch,cherry,beech.okou film face plywood