Get the left curve of a box

Thanks @Ewan_Opie but no luck. Got me thinking it might not be achievable with what I’m doing at the start to look at the outside curtain wall face? After I create the view I’m naming it then pulling the bounding box with the wall orientation again which isn’t correct to the created view. To be honest I find this all quite confusing. But when I get some time will dive deeper and try do what Gavin and Jacob are saying.

@jacob.small and @GavinNicholls would what your saying work considering I’m flipping views to the curtain walls orientation at the start?

Maybe I could use the location point of where its creating the view to determine the left side?