... ,sign boards for shops,poster board Thickness: 1-20mm 1,220 x 2,440mm,1,560 ... x 3,050mm,2,050x3,000mm a board sign,sign boards for shops,poster board Features: 1) Feather light, non-absorbent, fire ... ,050mm,2,050x3,000mm3) Special sizes available upon requests. a board sign,sign boards for shops,poster board