Since the PanelDue 7i is still relatively new (as of 2/19/18), there wasn't any cases/mounts available... until now! This case and mount combination is designed to attach securely to 3030-series (EDIT: And now 2020 as well!) extrusions while also providing a way of positioning the screen exactly where you want it. The PanelDue itself is held snugly inside of the case, but access to the screen and the connectors on the back of the panel is unrestricted.
What you'll need in addition to the printed parts:
M3X30mm screws, qty 4 (used to screw the front and the back half of the case together)
M3X6mm screws, qty 4 (used to screw the mount onto the back of the case. Could be longer [M3X10 should be fine] without running into the back of the PanelDue 7i PCB)
M3 nuts, qty 8.
M5x30mm, qty 2 (used to attach the arm to both the back of the case and the extrusion mount)
M5 Hex nuts, qty 2 (used in conjunction with the M5x30mm bolts above)
M5x10mm, qty 2 (used for mounting the bracket to the 3030 extrusion)
M5 T-nuts, qty 2.