Expanded from the gaming spirit of the classic Commander MS-I chassis, the uniquely design full mesh panel optimized airflow. With its modern design & high performance, it is the best choice for both gamers & enthusiasts. Specially designed for dual GPU placement options, Commander C Series has the support for vertical graphic card layout with dual PCI-E slots design. Integrated riser GPU support bracket not only prevents the graphic card from sagging, but also helps to reduce the weight on the motherboard PCI-E slots. The Commander C31 has outstanding expandability with support for a tower CPU cooler with maximum height 180mm, a dual expansion slot VGA of up to 310mm in length with reservoir, & a power supply with length of up to 200mm. Optimized for excellent cooling capability with two 200mm 5V ARGB front fans & one 120mm standard rear fan. The case is able to house up to two 200mm, two 140mm or three 120mm front fans, up to two 140mm fans on top to allow users to build a complete high-end system.