A:AnswerThis mount does not have a rotation knuckle. You would need to mount the tv upright to have it that way but would not be able to put it back without remounting it. The mounts seem to be universal enough to put it together that way.
A:AnswerLynn I wish I could help but they have to come back to mount my daughter s tv I purchased a Christmas gift for her and her Christmas tree was in the way I would look up on line which mount you have and see what type of screws it requires according to the size of your tv