As for the PSU, it is held in place by a holding plate. This seems to be a trend in the latest of casings but I think it’s just plain annoying as it requires more steps just to swap power supply units.
At the bottom are dust filters and what I like is the rather tall feet with rubber padding.
The front of the casing is simple – it’s covered by a single panel and a large dust filter.
The dust filter is attached to the casing via magnet, which I think is something to applaud NZXT for.