Hello. I have a question if anyone has an idea for a plug for a hole in the wall. The point is that I made a channel in the wall for cables to a TV hanging on the wall. The channel exit at the bottom is about 20 cm above the floor (I could not make the channel to the floor because there were contact cables in the wall). However, after rearranging the room, the opening in the wall will be visible. And here is a request for advice with what to plug it, some kind of plug, but also with a hole so that cables can come out of the channel. Any shape (round, square or other).
