Philips 42PFL6805H - Manual (Page 13)

Fix the bottom plate with one screw using the hex key.
The TV is mounted at the correct height if your eyes are level with
the centre of the screen when you sit down.
Distance between the 2 fixing points is 260mm (42PFL6805).
Fix the 2 mounting discs. Use screws with a diameter of max 6mm.
To begin / Setting up 13