This chalkboard has a revolutionery new surface,which is ultra smooth to improve erasability and reduce ghosting. 1.Plain green surface,supplied with wall fixings and pen tray. 2.Surface guaranteed for 5years under normal use. 3.Surface can be used with any chalks and easily wiped off. No. Size No. Size BH-1 30x45cm BH-9 120x120cm BH-2 45x60cm BH-10 120x150cm BH-3 60x90cm BH-11 120x180cm BH-4 90x120cm BH-12 120x210cm BH-5 90x150cm BH-13 120x240cm BH-6 90x180cm BH-14 120x360cm BH-7 100x150cm BH-15 120x400cm BH-8 100x200cm Origin China Supply ability 100000pcs per month