A:AnswerYes, to both questions. I believe you can download a pdf of the instructions from the manufacturers web site. Also comes with various spacers for different tvs with slight curvature to the back.
A:AnswerYes it will fit and the screws should all be in the mount kit you need to see which size to use on your tv. You may need to use a spacer which they also include with the mount kit hardware. There is a lot of hardware that you have to choose from but you will only need 4 of the screws.
A:AnswerThe mount can make very small height adjustments for leveling purposes. Unfortunately, I would recommend unscrewing the mount and reattaching based on your needed height adjustment.
A:AnswerIn order to hide the wires you would have to put holes in the wall and run the wires through the wall yourself. Or they make strips that you can put on your wall that hide the wires, but you just have a white stripe going up your wall.
A:AnswerYes. Used this mount for my 77" AG9, although seemed a bit light-duty for that large of a TV. Should be fine for the 55". The Sony SU-WL855 Wall-Mount Bracket is specifically designed for the AG9's, so it's very heavy-duty and allows the TV to be very close to the wall (0.86"), but it doesn't offer vertical tilt like this Sanus and it costs a lot more.
A:Answer2.7 inch for the mount, be sure to add the thickness of the TV to get how far out from the wall it sticks out. Also, depending on how you mount it (height, tilt angle, etc.), it could be more than that.
A:AnswerThe mount uses a heavy duty metal plate which is secured to the wall. All of the adjustment capability is in the brackets that you attach to the back of the TV. You then hang the brackets with the TV on the plate. Once you find out how to secure screws in concrete; it should be easy to secure the very adaptable plate.
A:AnswerI recently purchased the Sony X950G-75" TV, which was installed on my 75". I don't see any issues with it not fitting on your Samsung, seeing how this is a universal TV wall mount, designed to fit any TV up to 90" inches. Hope this helped
