Discrete dipole calculations of the double cell type have been used to study the anisotropic reflection at normal incidence of stepped 2x1-type surfaces. Only D-B-type steps have been used. The maximum of the anisotropy turns out to be in a direction rotated with respect to the principal axes, and the anisotropy itself depends strongly on terrace width. Further the crossed polarizer configuration is interesting for experimental work since it has no offset.