Power supply mounting question

The PSU in question is an Asus ROG Strix 1000w Platinum.

https://rog.asus.com/ca-en/power-supply-units/rog-strix/rog-strix-1000p-gaming/

Normally, I'd mount a PSU with the fan on the bottom of the case, sucking in fresh, filtered air. However, the design of this PSU/fan grill really looks like it's meant to be shown off. Additionally, all of the writing is face up when the fan is facing up, not down.

For the RTFM folks, I did. It just says to follow the case manual.

So, is it up or is it down? Or does it matter?