The Rosewill Cullinan may not look out of this world as the use of glass on three sides does restrict it in terms of design, but its clean looks and interesting material mix more than makes up for it. Coming with four LED-equipped fans right out of the box, these are a great addition and almost a necessity to make the chassis pop a bit more visually. But Rosewill has not stopped there as the Cullinan also comes with a fan header PCB for you to route all your fans to a central location over which to control them with the embedded controller at the top. Both of these elements are very important as the chassis also allows for up to two 360 mm radiators, which translates into a total of six fans. Here, the only gripe is the fact that you can only attach up to five units to the central PCB - but a fan adapter cable would take care of that.
On other fronts, the Cullinan scores some points with the shroud and plastic cover. These make for a really clean system, but also have things look a bit empty unless you add a lot of parts to the system. Regardless, the element of cleanliness is important as the tempered glass panels won't hide much of a cable mess from those taking a closer look at what lies beyond the tinted lining. To keep it as tidy as possible, the chassis also comes with magnetic dust filters on the top and at the front, both of which are easily removable and washable. The same goes for the more traditional filter underneath the PSU bay, which you may pull out through the back at any time.
If there is one small aspect Rosewill should really look into, it is the sliding lock to the left of the seven expansion slots. Here, the ability to slide it away from the slot by about another 5 mm for a bit more room would have been nice as I had a hard time installing the graphics card into the motherboard's PCIe slot. Talking of space, you should really pre-plan the cable routing and tie any cables behind the motherboard tray down to ensure you are able to close the chassis properly as the glass won't flex.
Overall, the Rosewill Cullinan is a beautiful, clean, and functional chassis. Rosewill has packed it full of features that are cosmetic and visual or functional.