I have not used a hard lightbox like the one you mentioned, and when I search for mp40 lightbox, all I come up with is a machine gun lol! I've only ever built my own lightbox, which was pretty easy to do, especially since I already have lights. I plan on putting tips for building and using a lightbox in my upcoming Photography for Etsy guide, but I'll shoot you a note if I come up with anything before then.