Mine is 19w X 25h X 16d (inches that is)
It is an old upright freezer and takes 50sec to raise it by 1C, 4m 16 sec to drop by 0.1C.
Control differential is set at 0.6C
Actual Overshoot >1.3C , <0.2C
I have the option to switch one heater off.
Control is by a STC1000