Board surface with lineation E149:
black grid 5cm.
![Board surface with lineation E149:](/media/cache/78/c2/78c276ae8abf0c728789409f8645a25e/Mat-E149_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.