The Waterloo Siskins have booked a spot in the Cherrey Cup.
It follows a 5-2 win over Stratford on Sunday afternoon, to finish that series in six games.
Winston Cestnick scored the game winning goal.
Waterloo will face the Listowel Cyclones in the final.
Listowel defeated Kitchener in five games in the semis.
That series will start on Friday night in Listowel.