Pre-Laminated Medium Density Fibreboard is a type of hardboard which is made from wood fibres glued under heat and pressure. The Medium Density Fibreboard is used as an alternative to plywood or chipboard. The Medium Density Fibreboard is dense, flat and stiff without any knots and can be easily machined. The Pre-Laminated Medium Density Fibreboard is made up of fine particles and does not have an easily recognizable surface grain.