In uk.d-i-y, brass monkey wrote:
I need to poke quite a few (9 ish) audio/video/network cables through a
single brick wall. How would you make it look 'professional' as opposed to a
pile of cables going into a hole? I'd prefer not to terminate at the wall,
just go directly into the kit. Cover the hole with a surface back box and
grommet out maybe?

Rather then use grommets I'd be inclined to remove the entire bottom
face of the box and route the leads out loosely through there. That's
assuming that it isn't too high on the wall, so the bottom is invisible.
Then leads can be added or removed easily, and you don't have the
problem of getting the connector through a narrow hole and a grommet. Be
generous when cutting the hole in the wall, and stuff it with foam to
impede draughts, noise, insects, etc.

For a few small leads you can get away with using a face plate right
against the wall, with notches filed in its lower face.

--
Mike Barnes