Melamine Boards Origin Thailand / China Variations Melamine Chipboard, Melamine MDF, Melamine Plywood, Melamine MR MDF Grades Grading system depends on origin Density Thick Panels – 730 to 740 kg/m3 Thin Panels – 800 to 820 kg/m3 Thickness 1.8mm to 25mm Panel Size 4’x8′ / 3’x7′ / 6’x12′ etc.