1385 refers to the top of the stand. The height of the mount can be adjusted up to a maximum of 1285. The top edge is therefore individual and must be measured with your TV. You can find more information (instructions) from the manufacturer. Regards

We have a 50 inch TV and at the absolute maximum the top edge could be at 151 cm. In our case, it is at 137 and still has 14 cm of "air" at the top. Of course, it also depends on where the screws for the bracket are located on the TV.

I agree with the previous speaker.
We have set up our 65 inch unit with a top edge of 153 cm from the floor, and still have about 12 cm of play at the top.
So the maximum top edge is 165 cm.
I think with a 55" screen it will be 5-6 cm less because of the height difference of almost 12 cm from 55" to 65".