I would envisage this as a table big enough for 3 × full-size gastronorm trays, intended presumably for transferring foodstuffs from cardboard cartons (forbidden in cold-rooms) into containers more suitable for storage (e.g. some variant of gastronorm-format trays etc.) — and with a 'back' on it, i.e. an upstand at the rear, which may help prevent things slipping off, but also suggests possibly intended to be used against a wall rather than as an island unit.