The Mainstage auditorium is the largest venue in the PAC, and can seat up to 849 patrons. The proscenium is 58 feet wide by 38 feet high. Equipped with an orchestra pit, an automatic orchestra shell, 45 line sets, and 73 feet of clearance height, the Mainstage auditorium can accommodate a variety of professional productions, from solo performances to 80-person orchestra ensembles. The incorporation of a fly tower and orchestra pit also allows for a full range of music, dance, and drama productions. Topping the list of innovative performance staging solutions developed by Holzman Moss Bottino Architecture is the Center's built-in, single-piece, automated orchestra shell enclosure.