Physical properties at the wall as a function of the disk height, for a model with z_big = 3H, ﹩\dot{M}=1\times 1{0}^{-8}{M}_{\odot }\,{{\rm{yr}}}^{-1}﹩, ϵ = 0.01, and a 0.5 M_⊙, 1 Myr star. We show the wall geometry (upper left), the dust and sublimation temperatures (upper right), the disk density (middle left), the abundances of large and small grains (middle right), the total mean opacity (lower left), and the mean true opacity (lower right). The total mean opacity and the true mean opacity (green lines in the lower panels) are obtained as the sum of the mean opacities of the small- and large-grain populations, each weighted by their respective dust-to-gas mass ratios.