A2 Greyboard 10 Sheets Large Mount Board Backing Board Model Making Presentation Board Recycled Extra Thick 1500 Micron Recycled Card : Amazon.co.uk: Home & Kitchen
40 Pcs 300mm x 210mm A4 Corrugated Cardboard Sheets, 4mm Thickness Brown Corrugated Card, Corrugated Kraft Cardboard Sheets for Mailing Packing Crafts : Amazon.co.uk: Stationery & Office Supplies