Note that HDMI Cables with RedMere are directional. One end must be connected to the source device (e.g. blu-ray player) and the other end to the sink/display (e.g. HDTV). Hooking them up backwards will not damage anything they just won't transmit a signal. Also note that these cables are fully compatible with switches splitters matrix devices etc. They can be used in any application in which a normal HDMI cable can be used and many applications where HDMI extenders would otherwise be required!
The VW-1 rating on this cable indicates that it complies with fire safety codes and insurance requirements and is safe for use inside the walls of residential class buildings.
TIP: It is a good idea to test cables and connections before installing them inside a wall. If there are any issues or problems we can help you resolve them before you spend the time effort and expense of installing them inside the walls.