In my honest opinion its too narrow and dust would be a big problem all the O cases and the really inexpensive Ikea cases are all enclosed with glass which really cuts down on dust but it still looks cool maybe figure out a way to encase it with plexi or glass
sorry I meant depth not width and having a case enclosed with glass or plexi cuts down on dust considerably especially the O cases they are more sealed then the Detolf is
I have a detolf myself and I would rather use a detolf because I also have other stuff that I want to display (i.e coins, cards boxes, etc...) and not just the sunglasses. having this type of display case just feels like the display case you can find at walmart or 7eleven. Again, just my .02 regarding displaying my tiny collection. Regarding the idea though, sounds and looks good, just not for me.