Yeah, that part doesn't matter. It's no big deal with that part. You'll just be reading the label upside down lol. My PSU only has fans at the back, that's it. It also has vents at the front of it. Some high performance PC's I've seen have the fans blowing down into the CPU/motherboard area while some are blowing up, so it's no big deal. The exhaust fans will take care of the heat buildup within the case.
I like to be able to read my label on the PSU so I'll have the labeled part facing out at me on the right side of the PC (if you are facing the back of the case). I really don't care about where the fan blows though. Either way, warm air is coming out reagardless.