We sell these in packs online or they are available individually in store. Westfoam 5mm White Foamboard is a rigid board with a smooth finish for a range of uses including model-making and mounting. Available in sizes A1, A2, A3 and A4.  Made of acid-free paper and non-toxic, recyclable polystyrene, it’s light, easy to cut with a craft knife, and has been treated to resist yellowing. Size A0 is available in packs of 25 here. Sheet sizes and quantities A1 841mm (L) x 594mm (W) (Pack of 10) A2 594mm (L) x 420mm (W) (Pack of 20) A3 420mm (L) x 297mm (W) (Pack of 10) A4 297mm (L) x 210mm (W) (Pack of 20) Westfoam Board 5mm in size A0 (pack of 25) is available to buy online.