This fan has 10 distance upgrades inside it and 1 vertical upgrade. I have confirmed that the visual box is indeed the range it's blowing at, even though it should be blowing much farther.

Adding the distance upgrades individually does not change this.

I just can't duplicate this no matter how I test, the only thing that stops the box is having a block infront of the fan anywhere directly infront of it. I'm going to close this I'm sorry.