White Plastic Sheets 228 x 330mm x 1.5mm (60 thou) thick (3 pcs)
A1 Black 5mm Foamboard - Pack of 10 – Cathedral Products
A1 Clear Acetate Sheets. 400 Micron 841 x 594mm
White acrylic sheet perspex 3mm 5mm 10mm A3 A2 A1 plastic cut to size panel sign | eBay
Blank Mylar Sheets A1 size - Cut your own stencils. 125 micron polyester Mylar Sheets. Blank Mylar sheets available in range of sizes – The Stencil Studio