In wall trunking question......

[fizz47]

I am getting my tv wall mounted with the trunking to be hidden inside of the walls...

My question is, should the trunking or conduit be metal or plastic?

Will the metal conduit interfere with signals at all?

Would trunking like this be ok to pass hmdi cables, sat cables adn power cables through?

http://www.screwfix.com/p/tower-mini-trunking-38mm...

[fizz47]

abbotsmike said:

I would say fit something way larger than you think you need, and put a draw cord in for the inevitable future cables!

sorry for my ignorance- what is a draw cord and how does that work?

[fizz47]

PAULJ5555 said:

Just run spare bits of string through it and leave them there for the future, you can use these to pull through new cables.

gotcha - i thought there was some mechanism or something you buy to do this - i tend to miss the obvious sometimes and overthink things...

thanks!