A:AnswerDepending on the size and weight of the tv, you will need to use wall anchors for drywall. I recommend using the ones that handle up to 300lbs of weight. You can find them at gome depot. You have to drill a pretty large hole in the wall to get them in. (About 1 inch) but they hold really well. Try to avoid hitting the metal studs. They will not hold the bracket well.
A:AnswerI suggest building out on a 2x spacer. I did something similar on mine for other reasons, but worked quite well. You could even double up the 2 lumber spacer for more extension. Painted mine flat black.
A:AnswerThe LG 42" LB6300 comes with qty 2 spacers for wall mounting , which will make the installition work. I installed this setup but make sure you have the spacers that came with the LB6300, they are black plastic with a screw on one end so you can mount the spacer to the back top of the TV.
A:AnswerYes, you can attach it to a concrete block wall.
You will need Tapcons (specialized concrete screws that drill into concrete) for the wall mount. The rest of the installation is standard.
A:AnswerI have a Samsung 55" 6350 on it and the "flush" that I can get with it would be about 6" off the wall if the screen is flat. Because of the arm, mounts and swivel. ..but this thing is amazing man, idk what I would do without mine. Hope this helps.
A:AnswerYes. Your tv has a versa pattern of 400 mm x 400 mm and that is a compatible size for this mount and the tv fall in the range for size and waight