R-Monitor Stand Compatible VESA sizes
Out of the box, the R-Monitor Stand is compatible with VESA 75x75 and VESA 100x100.
These cover the majority of gaming monitors on the market, for example VESA 100x100 is the standard VESA pattern for many monitors on the market including Samsung Ultrawide 49" Gaming Monitors, so likely this will be sufficient for most racers.
XL VESA Bracket
For racers with a larger television or different-brand monitor, with the XL VESA Bracket selected, the compatible VESA mounting patterns are: