well, not a chimney, but a wooden houseing for the stove pipe that actually carrys the hot gasses up n out. i am in the process of hanging a flat screen tv over my fireplace. i'm planning on running cables. wires, what have you thru this space, so that when it exits at the blind spot (behind the tv) they won't be seen. the tv is 40+ inches wide and centered over the fire box. the houseing is 52" wide. so, has anyone else run into this, and how did you protect the wires? i assume that the stove pipe is tripple walled, but cant be entirly sure. am i worring about something that's a non issue? and dose anyone have an idea how to protect these wires?