This is an updated and improved PSA slab wall display file. 

The update includes keys to help line up the slabs easier. It is a tight fit so it doesn't fall away from the wall, which I'm scared about which is why the tight fit. I ended using a small file to sand down the keys. 

To remove the keys use something blunt to push out the keys.  

The picture shown is my Lamelo Ball PSA set. It's not worth a lot nor my favorite player, just wanted to show how I intended the file to be presented.. 

Older model file can be found here:

https://makerworld.com/en/models/93161?from=search#profileId-99599

Thanks, have fun printing..