I used the dimensions from the BIQU store page for this model since they do not yet have it on the github page. I actually printed a slightly different variation of this file since I used L adapters for both the HDMI and USB C ports which are now in different locations from the original screen. I increased the opening for them on this file as it was a tight fit on the original I printed.
The articulating arms are from the VoronDesign github but I did modify them a little to add additional clearance on my V2.4 350. Original length arm stls are found here since you will also need to print the lcd mount_foot a&b to which the arms attach : https://github.com/VoronDesign/VoronUsers/tree/master/printer_mods/revnull/rpi_7in_display_mount
I also tried a modified version (sort of a type of quick release) based off the bracket found above which can take a center magnet or the 4 M3 screws.
I used 8 M3x4mm heat inserts - 4 on the case and 4 on this bracket). Magnet version is untested.
Edit: Step file added - note the screen included in this I modelled with basic dimensions from the physical unit and the layout sketch from BIQU store website - it is not an official model from BTT.
The author marked this model as their own original creation.