Custom Size Economic Education School Chalk Board With Tray

FACE: High quality of lacquered steel sheet in 0.17-0.25 mm thick,with 5H hardness BACK: Galvanized steel sheet in 0.17-0.22 mm thick,rustproof CORE: Corrugated cardboard, foam or MDF TRAY: Movable aluminum tray with ABS caps GLUE: Environment-friendly HOOK: Movable and invisible THICKNESS: The thickness of core (from face to back) is 9 mm. The depth of frame is 17 mm FRAME: anodized aluminum thickness 0.6 mm. The width of frame is 20 mm If you need more details,please contact us. Custom size,color,material are available. Samples are available.