A system, method and data structures for transmitting batched data over a network in asynchronous, non-blocking operations, with acknowledgements returned to the senders. The at least one corner element is provided as a rigid element in the extension plane of the fitting device, and the fastening device is connected to the corner element via the adjusting device for positioning the corner element against a side edge of the opening. The method features complete assembly of electrical contacts before addition of a molecular component thereby preserving the integrity of the molecular electronic component and maintaining a well-formed gap.