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About 2 meters. It can't be too high, otherwise it's visually uncomfortable. It can't be too low, otherwise it's space above.
First of all, you should determine the screen size you want, 42 inches-50 inches should be kept at a distance of more than meters; 36 inches-42 inches should be kept at a distance of meters; 28 inches-32 inches should keep a distance of meters; 17 inches-26 inches should be kept at a distance of meters; 13 inches-20 inches should be kept at a distance of meters. >>>More
No problem, to give you a diagram reference:
Then it depends on how you design, if you play decorative cabinets on both sides of the background wall, paste the middle on the line, if you don't stick the whole wall, it will also look monotonous, it is best to hang something on the wallpaper, such as photos, or something, please adopt!
More than 42 inches, because you're quite far away.
See if you can stretch some.