elevator_roof_collar_glass
glados_screenborder_curve
triple_wallpipe_straight_c
rail_horizontal_straight_128
hanging_walkway_128a_cards
glados_wheatley_boss_animation
hanging_walkway_128a_lowres
glados_wheatley_boss_screen
backpanels_color01_nospec
indicator_lights_corner_floor
signage_overlay_boxdispenser
concrete_modular_floor001e
observation_tilefloor003a
observation_tileceiling001a