The case looks extremely sleek due to the fact that not only the sides use glass panels, but also the front. That said, the material really does not give a lot of options to add any design, but Rosewill has done a good job at framing the glass elements with a black trim to add a bit more depth to things.
Looking at the front, you can clearly see the fans and the dust filter behind the panel. In the rear, things look quite traditional with the PSU bay on the bottom of the chassis.
As both sides are covered in glass panels, one may think that they are identical. However, Rosewill has tinted the one behind the motherboard tray more so that you can hide any cable clutter better.
Taking a closer look at the front, you will find a Rosewill logo on the bottom edge of the glass panel. You may take the whole front cover off without having to worry about the I/O cables as they are firmly attached to the case body. A magnetic metal mesh cover runs across the whole height of the front, behind which you will find three 120 mm fans right out of the box.
The bottom-mounted PSU bay in the rear comes with two sets of mounting holes for utmost flexibility. Above that, you will find the eight horizontal expansion slots. Rosewill has also placed two vertical ones within the Cullinan MX so that you may install a dual-slot GPU to show off to your friends. However, to do so, you will need to buy the appropriate ribbon cable separately. In the very top is another 120 mm fan, this time set to push air out the back of the chassis. This brings the total within the Cullinan MX up to a whopping four units. On top of that, all of them come with high-quality RGB strips built into their outer rings.
On the top, you will find a large opening that is covered by another magnetic dust filter. Here, you will be able to install a vast variety of additional fans or radiators without having to worry about motherboard compatibility. Rosewill has decked the case out with a two USB 2.0, a pair of USB 3.0 and the usual audio plugs. On top of that is also an embedded high/low fan controller.
there is another dust filter on the bottom of the chassis, to protect the power supply from dust and grime. Looking at the underside of the Cullinan MX, you can see a set of mounting holes for a 3.5" hard drive on the floor.