This high quality, sturdy foam board is specially designed for easy cutting and to produce clean, sharp edges. Black on one side, grey on the other. It has a number of uses, including mounting, backing artwork, making models and framing. All of the boards come in multi-packs of 10, meaning that just one pack can fulfil multiple purposes. Made by the reliable brand Westfoam, this board is made of three components – the foam core is covered with acid-free paper for a smooth surface and increased longevity. At 5mm thick it is both rigid and durable, but not overly bulky or heavy. This board is available in 5 different sizes available, so you are sure to find the perfect one to meet your needs. - Surface texture: Smooth - Acid free: Yes - Product dimensions: 29.7 x 42 x 0.5cm (A3) - Page size: A3 - Brand: West Design - Sub Brand: Westfoam - Surface pattern: Plain - Thickness: 5mm - Colour: Black/Grey - Rigidity: Rigid - Main material: Polystyrene - Used for: Mounting prints, as a backing material, modelling, framing - Number of pieces: 10