Curved Tempered Glass INNOVATIVE DUAL CURVED DARK GLASS Ever since the launch of the original Cosmos II, fans have been asking, or making by themselves, for a windowed side panel. Cooler Master has accepted the challenge and to celebrate the 25th anniversary we have released this special edition. For this special edition we even take it a step further: Both sides come with beautifully crafted curved tempered side panels that blend seamlessly with the sophisticated contours of the case. A Legacy of Aluminum The first aluminum chassis was made by Cooler Master under the ATCS series. This 25th anniversary edition of Cosmos II is paying its tribute by changing the M/B Tray & Partition Plate to aluminum. Plus it adds a touch of premium. Aluminum Motherboard Tray with black rubber grommets