... are mainly birch and poplar, glued or paper, 7-9 layers, R=4000 for length less than 1m, R=8000 for ... Specifications MaterialBirch/Poplar/eucalyptusRadiusR4000 or R8000 Structure with 7 or 8 layers birch glued Surface clean or resin or foil paper GlueE1 ... gradeDesignflat or curved Thickness7,8,9,10,11,13mm,etcDelievery25 days Loading Quantity: Qty/20 ...