... Rear: Zinc-coated steel board Aluminum Frame, Pen tray Enamel Whiteboard Surface: P3 ceramic enameled steel boardSamdwich: Fiberboard or Superior Corrugated ... , 90x150cm, 100x180cm, 100x200cm, 120x150cm, 120x180cm, 120x200, 120x240cm, 120x300cm, 120x400cm. Enamel Whiteboard