This connector will allow you to attach a multiboard to your kallax unit. When printing two of these, a multiboard of width 15 fits exactly inbetween them.

It is recommended that you print this in PETG, with high strength settings.

Based on https://www.printables.com/model/144440-kallax-connector

For more information on the multiboard system by Keep Making, see https://www.multiboard.io.

Please note that this model is a remix, and not an official part of multiboard.