It stretches and warps and doesn’t really line up exactly with the TV. Just measure everything manually and mark on the wall. Notes: – This is a moderately tough install to do yourself. It requires two decently strong people to lift (77″), especially when lining it up to mount.
https://www.amazon.com/LG-OLED77GXPUA-Alexa-Built-Ultra/dp/B0829RZXLJ

