A pack of 5 Finsa Fibraprint MDF with a Smooth White Face on one side and plain MDF face on the other side. These MDF boards are cut to a more manageable size of 600mm x 400mm each. The 3mm thick Fibraprint MDF board has a smooth surface face and a uniform fibre structure. Due to these properties and the fact that it is a very thin MDF panel, it makes an ideal choice for use with laser machines for cutting and engraving. In addition, they can be used for the back of furniture or drawer bottoms. White faced MDF can be used for a variety of DIY and crafting applications. Medium Density Fibreboard (MDF) is a reconstituted wood panel product. Measurements (length x Width): 600mm x 400mm 60cm x 40cm 23.62 inch x 15.75 inch As a natural timber product, and as this is a very thin MDF board, there could be a slight bow or twist when placed on a flat surface. This is normal and it is recommended that the edges are taped down when used for laser machining applications. There is a small tolerance in thickness of +/-0.15mm.