as Aaron « HoseInProgress » writes, Wire Mesh Cable Trays are « (a) robust solution for running large quantities of low voltage wire. (…) I realized they’re mainly marketed towards enterprises and not residential use. (…) I have a feeling they’re going to be increasingly marketed to consumers ». First had an idea to use them in summer ’04 visiting a Bauhaus store in Dornbin, Austria. See also NEMA.