The house is made up of essentially three parts:
First there is the General House, which is always a part of the P.A.C.
Then there are parts Two and Three, which each consist of a large turntable that swivels between the P.A.C. and either Rainier and Cascade Halls. Turning these both around add a one to two hundred extra seats to the auditorium.
Overall with the General House and both turntables opened up, there is a total of about 583 seats