Wall socket plates for Neutrik speakON and other d-size chassis connectors, to be used with Attema U40/U50 wall junction boxes. Frames included allow for 2x3 and 1x3 configurations. 2 versions of plates included, 4.4mm recessed for the plastic connectors, 2mm recessed for the metal chassis connectors of which 1 compatible with the etherCON. The 3rd plate is just a hole to run cables through. A little tool to rotate the mounting points of the Attema U40/U50 is also included. Note: to print the back plates on an Ultimaker 2, disable the skirt etc.