Schematic illustration of BLR shape and its components in FRADO. The components of BLR are represented as (a) an outer tail consisting of dusty failed winds (simple up-and-down motions), (b) an inner region with slightly-to-broadly elongated elliptical orbits, and (c) a funnel-shaped outflow stream of clouds. The red and blue solid lines show the peak height of the trajectories of dustless and dusty clouds, respectively. The BLR_in and BLR_out set the two ends of a radial region of the accretion disk within which the material can be lifted due to disk radiation pressure. The black solid line represents the sublimation location. Region I marks the hot region above the sublimation location where dust cannot survive; the central disk UV radiation reaches the clouds via scattering by the hot gas in this region. Region II underneath of the sublimation location and cold enough for dust survival is obscured by the outflow stream; it prevents the BLR material from receiving the scattered ionizing radiation.