Wooden Hardboard Sheets A4, A3*, 12" x 24", 16" x 24" - Pack Sizes 1,2,5,10,20
Hardboard Sheets - Various sheet sizes - All 3mm thick. Where we specify A4 or A3 for our hardboard this is only a rough guide so;. Standard 3mm untreated hardboard. Various sheet sizes (see chart below).