Collection of model spectra with an effective temperature of 1100 K and varying surface gravity values for the three legacy model grids (COOLTLUSTY from H+07c: Hubeny & Burrows 2007, BT-Settl by A+12: Allard et al. 2012, and Sonora Diamondback by M+23: Morley et al. 2024, with a fixed [M/H] of 0.0 and f_sed = 2), as well as the best-fit spectra of the BeAR free-chemistry retrieval analyses with a gray-cloud model. Data is shown for the HST 2018 maximum brightness spectrum as dark blue dots with associated uncertainties.