This is a pack of 5 foam boards from Cathedral. The size of the boards are A3 and they are each 5mm in thickness which will keep anything you mount on it sturdy and secure for your presentations and displays. This foam board is recyclable and eco-friendly and they are suitable across many different professional and creative disciplines, for example any artwork you need to keep secure and mounted these are perfect for, they are rigid enough to be utilised for model making and many more applications. Each board contains acid-free paper and is PH-neutral, non-toxic and made from recyclable polystyrene. They are ideal for artists, students studying art and design, paper and card craft projects, model makers, typographers and many more. In-fact foam boards can even be used for completing jigsaw puzzles due to their sturdy surface. - Brand: Cathedral Products - Pack of 5 - Size: A3 - Colour: Black - 5mm thickness - Eco-friendly - Recyclable - Acid Free