Board surface with lineation E121:
grey 1. school year.
![Board surface with lineation E121:](/media/cache/c3/15/c315fefcc95d218740a7e9fa2fe4973e/Mat-E121_ME_XX_P01.lang.jpg)
Steel sheet for all specially-coated writing surfaces of up to a width of 300 cm and a height of 120 cm. The vitreous-enamel coating is stoved at a high temperature by a special process. The surfaces can be written on with chalk and magnets adhere to them.