Insert I designed for the Rise of Redskull box for Marvel Champions. My goal was for this to be my "to go" game box, so it easily fits four hero decks, a villain or two, a couple of modular sets, and game pieces. Plenty enough for an evening of gaming.
This is a really tight fit on the print bed, in the game box, and also on the sleeved cards. I use UltraPro sleeves for mine, and designed this to optimize wall width so the sleeves just barely slide in there. You might want to double check your sleeve size or test print a small slice before you commit to printing the entire thing.
I also recommend test fitting one of the dividers before printing off a bunch. It took me a few tries to get them sliding in and out right, and depending on your printer you might find it too tight of a squeeze and need to adjust the size a bit to get things just right.