Navistar International Corp., owner of Monaco RV LLC, said today (June 19) it has named Diane Guylas to its board of directors.

Guylas is a group vice president at E.I. DuPont de Nemours & Co. The appointment was effective June 16 and increases the number of Navistar directors to 10. Guylas was also appointed to the board’s finance committee, according to the Associated Press.

Navistar affiliates make military and commercial trucks, diesel engines, buses, RVs and parts for motorhomes.

Guylas has been in her current position at DuPont since April 2006. She joined the company after graduating from the University of Notre Dame in 1978.