Since the sidepanel has no window I don’t mind the inside not being coated.
Looking closer inside, I found tool-less PCI brackets and the two aforementioned fans.
The front sports a host of cables and SATA hot-plug bays, which I think are very nice and save time on re-cabling if you wish to quickly change out / in an HDD / SSD. On this side you’d be able to put the two fans that are by default installed on the backside.
The backside, as previously named, has two fans pre-installed. There’s also room for cable management.