Observed median SED of Herbig stars (diamonds) with quartiles (gray area). Overplotted is a disk model with a puffed-up inner rim with a scale height 2.5 times the pressure scale height and turbulent mixing strength of α = 10^-2 (solid line). Also plotted are a model with the same inner rim and a modified grain size distribution with a power-law index of 4.0 (dotted line) and a model without a puffed up inner rim, but with millimeter sized grains within the dust evaporation radius (dashed line). The gray line denotes the stellar photosphere. The inset shows the millimeter regime.