Rather odd question: I am about to purchase plasma with sep. Media box + 10 extension cable. Issue here is that I need to run the a 10m cable from media box to Plasma connection cable under the flooring. What I am struggling to solve is how I can neatly route this rather hefty cable via sockets. Because this is unbroken I was hoping I could find (without success) some stainless steel sockets - with a black 'letterbox brushes" centre which to route the cable through. Not sure if that is very clear! Help appreciated! Does anyone make these? Graphic design is not my forte!