Hello. I have a hole in the chimney stack through which I'm running some AV wires. The wires come through holes in the other side of the stack from the outside. On the inside is a brick-sized hole.
I want to mount wallplates in this hole. I've tried mounting the 25mm back boxes onto a brick to fix inside the hole, but it is proving too difficult to get aa the wallplates aligned with each other so that they are level.
What is the best way to do it?
I want to mount wallplates in this hole. I've tried mounting the 25mm back boxes onto a brick to fix inside the hole, but it is proving too difficult to get aa the wallplates aligned with each other so that they are level.
What is the best way to do it?