Name: Plug-grade acrylic bulletin board features: they can always replace the contents, simple and quick, custom background and sizes available on request Material: 5mm Acryl + 2mm imported acrylic box. Size: There are the following optional specifications (other specifications please contact) single A4 box, excluding the floor, the size is 220 * 305MM an A4 box (including the floor), floor 300X400MM two A4 size boxes, floor size of 400X600MM three A4 box, floor 500X700MM four A4 size boxes, floor size of 600X900MM other sizes, please contact customer service quote