Simulated spectra of the two PAH disc models for selected inclinations. The left panel shows the SED of a smooth PAH disc, and the bottom panel shows the disc with a 40 au PAH gap containing only 10% PAHs in the gap compared to the smooth-disc model. Even though the strength of all PAH features decreases in the gap model, the short-wavelength features (3 µm and 6 µm) become much weaker than the 11 µm feature.