Overclockers Club published a review on the Cougar MX300
A quote from the article:
Looking at the pictures below, Cougar takes a different approach to the ever growing problem of the generic standard chassis, by going with a bee-hive front design to stand out. The front itself has two exposed 5.25" bays behind the grated bee-hive design, with a Cougar logo near the bottom and the chassis O/I ports at the top. The back comes with a silent 120mm rear fan, seven expansion slots, and a bottom mount for a power supply. On top of that, the chassis itself is slightly more compact than usual, making it necessary to have the expansion cards stick out when installed. Cougar also included a plastic cover that hides the thumb screws for the slots.Cougar MX300 Review @ OCC
The left side panel includes an extruded section, both a window on the right, over the hard drive bays, and a vented section on the right for up to two 120mm fans. The right panel continues the design with a slightly extruded middle to complete the look and effetely adds more space behind the motherboard tray.