The present invention relates to a plate freezer comprising a stack of freezer plates (1), each freezer plate having a first and a second surface (2,3), surrounding a hollow interior through which a coolant may be circulated, where each freezer plate is provided with one or more apertures (10,11), where one or more continuous rods (12,13) is/are inserted through overlapping apertures in the stack of freezer plates, where each rod in a first end is provided with actuator means (20,21), and where engagement members (14) are arranged in communication with the one or more rods, where said engagement members may be in a locked position with the rod such that the rod and engagement members move at the same time or an unlocked position where the rod moves relative to the engagement member. The overall height of a plate freezer having a certain capacity can be reduced, and the time needed for freezing the product is reduced.