Hardboard: Size:1220x2440mm; Thickness:2.0mm,2.5mm,2.7mm,3.0mm,3.2mm; Type:Glue added HB, waterproof HB. Hardboard/Hard Fiber Board:Size:1220x2440mm;Thickness:2.0mm,2.5mm,2.7mm,3.0mm,3.2mm;Type:Hardboard glue added;Normal Hardboard;waterproof hardboard. Hardboard Grade A