A white dry wipe, sometimes called WOWO (write on wipe off) surface on a ferro sheet that has the properties of steel i.e. its attracts magnets but has no magnetic properties itself. Its become common practice to use the term a magnetic board or wall where in fact yopu actually want tyhe board or wall to be attractive to magnets rather than be magnetic!
This material is ideally used to make a magnet receptive surface that can be written on and cleaned off. Often used to make 'magnetic' notice boards or create a 'magnetic' wall. It can come upto 1260mmm wide and with an adhesive on the back or not!