Panels are produced with the same decorative laminate on both faces, or with a backing/lining laminate on the reverse face Decorative faces are reinforced with aluminium sheet. A broad range of reinforcement sheet thicknesses are available, including 0.3mm, 0.5mm, 0.8mm and 1.0mm. 0.5mm is the standard reinforcement thickness. Aluminium reinforcement sheets can be selected with different thicknesses on different faces: for example, 0.8mm for front face, 0.3mm for back face. Aluminium reinforcement sheets are 5000-series alloy for maximum strength and anti-corrosion performance Aluminium honeycomb cell size is 6.35mm.