Quote Originally Posted by Konical
One of the Beseler 35mm carriers (#8302) for my MCR-X has an opening slightly bigger than full-frame negative size. ...Perhaps other enlargers have similar carriers available.
I have over-cut carriers for 35mm, 120 and XPan for my MX45 Beseler allowing me to print the black borders if I wish. I did have to special order them. Try your specific manufacturer to see if they are available.

Good luck,