Flat Base Canvas Stand

I needed a canvas stand to display canvases standing on the back of the couch. They were previously standing on end, and were prone to falling behind the couch.

I made this stand with a textured bottom in an attempt to resist slipping on fabric.

I have tested this stand with  305mm x 228mm and 406mm x 305mm canvases and they work in both landscape and portrait orientation. The thickness of the tested canvas is 3.5mm.

https://cad.onshape.com/documents/419307a691807081fcef932f/w/248030a45fecc7e5f4d51e68/e/05027ce6386b93d8365cca95?renderM