I didn't see any models for displaying anything other than one touch or standard toploader stands, so I made my own for 5x7s. I have printed and tested the verical one with UltraPro and BCW 5x7 cases. However I have not had a chance to print and test the horizontal one, so please let me know if any changes need to be made to accomodate that.

Model is based on, but not remixed, of @0d7i0s_467 ShowCase CardStand. 

Print Details:

Filament: PETG

Infill: Gyroid

Infill %: 20