The disclosure relates to a door for a freezer or refrigerator cabinet, including an insulating glass unit with at least two panes, which are joined by means of spacers for the creation of a gas-filled intervening space. The panes each have a transparent region and all spacers are designed to be free of desiccant, and a desiccant reservoir, which is in fluidic connection with the intervening space between the at least two panes.