SED with archival data for RX J1604.3-2130A and simple disk models. The open dots show all the available data obtained from VizieR and not corrected for extinction. REM data are shown for the filters with negligible color terms. Blue dots show the selected brightest magnitudes for each band, corrected by the nominal A_V = 1.0 mag (Preibisch & Zinnecker 1999). Three very simple models are shown for comparison for the purpose of estimating the mass that could be associated with inner disk emission (see text for details): two constructed using RADMC radiative transfer code, and two assume a grey body model for material located in a ring with temperature 850 K and dust mass 0.003 M_Ceres, a temperature 1270 K, dust mass 4e-4 M_Ceres, and a temperature of 1540 K with dust mass 2e-4 M_Ceres, respectively.