A passenger seat unit comprising: a privacy shell at least partially defining a passenger seat area, the privacy shell comprising an opening for allowing entry to and exit from the seat unit; and a door supported on the privacy shell, the door comprising a first panel and a second panel pivotably connected to the first panel such that the second panel is movable relative to the first panel between a folded position and an unfolded position, wherein a length of the door in the folded position is less than a length of the door in the unfolded position, and wherein, in both the unfolded position and the folded position, the door is movable in a forward and aft direction relative to the privacy shell between a forward-most position of the door and an aft-most position of the door, wherein the first panel defines an aft edge of the door, wherein the door further comprises: a door latch that is configured to selectively secure the second panel to the first panel in the folded position; and an indicator along the aft edge of the door, wherein the indicator provides a visual indication of whether the second panel is latched or unlatched to the first panel, wherein the indicator is movable between an activated configuration and a deactivated configuration, wherein, in the activated configuration, a visual marker providing the visual indication is visible, and, in the deactivated configuration, the visual marker is concealed, and wherein the indicator is coupled to the door latch such that movement of the indicator from the activated configuration to the deactivated configuration disengages the door latch such that the second panel is disengaged from the first panel. a privacy shell at least partially defining a passenger seat area, the privacy shell comprising an opening for allowing entry to and exit from the seat unit; and a door supported on the privacy shell, the door comprising a first panel and a second panel pivotably connected to the first panel such that the second panel is movable relative to the first panel between a folded position and an unfolded position, wherein a length of the door in the folded position is less than a length of the door in the unfolded position, and wherein, in both the unfolded position and the folded position, the door is movable in a forward and aft direction relative to the privacy shell between a forward-most position of the door and an aft-most position of the door, wherein the first panel defines an aft edge of the door, wherein the door further comprises: a door latch that is configured to selectively secure the second panel to the first panel in the folded position; and an indicator along the aft edge of the door, wherein the indicator provides a visual indication of whether the second panel is latched or unlatched to the first panel, wherein the indicator is movable between an activated configuration and a deactivated configuration, wherein, in the activated configuration, a visual marker providing the visual indication is visible, and, in the deactivated configuration, the visual marker is concealed, and wherein the indicator is coupled to the door latch such that movement of the indicator from the activated configuration to the deactivated configuration disengages the door latch such that the second panel is disengaged from the first panel. a door latch that is configured to selectively secure the second panel to the first panel in the folded position; and an indicator along the aft edge of the door, wherein the indicator provides a visual indication of whether the second panel is latched or unlatched to the first panel, wherein the indicator is movable between an activated configuration and a deactivated configuration, wherein, in the activated configuration, a visual marker providing the visual indication is visible, and, in the deactivated configuration, the visual marker is concealed, and wherein the indicator is coupled to the door latch such that movement of the indicator from the activated configuration to the deactivated configuration disengages the door latch such that the second panel is disengaged from the first panel.