25mm
1) silver anodised aluminum frame with ABS corners
2) Color aluminium frame available
3) Magnetic dry erase surface, lacquered steel or enamel, plain or 5x5cm grided
4) various sizes available.
5) back material : seven-layer corrugated board + glavanized steel / 9mm MDF
6) mounting accessories and plastic pentray included.
Flip chart / whiteboard/ bulletin board/ green board/ pin board/ student writing board