lapboard Size: A3, A4,A5 etc. Lapboard Size: A3, A4, A5 etc. thickness: 3mm 2mm 4mm 5mm Material: MDF with melamine surface A4 Hard Board ClipboardRecordable compact A4 tablet, wide range of application, education or kindergarten use, double side, support OEM, welcome letter from the advisory SIZE:23x32x 0.3cm WT:200G A4 Hard Board Clipboard