I know that Warner Media Services produced a lot of these at one point, but I think that’s been dropped now. I’d love to find someone still selling from a stash of these because I seem to be always getting DVDs with broken prongs on the disc spindle, and I’d like to be able to fix my problem with just the plastic tray that hooks into the printed paper wrapper.
Not sure if this is what you’re looking for, but I found this DVD Digitray. I ordered from this company (Effectuality, Inc.) a few years back and everything went fine. Good luck, and please let me know if that’s what you were looking for.
I don’t think the blank digitrays have the folding side strips with pins to engage the holes in cardboard cover art used in snapper cases.