lower the system internal temperature: praetorian 730/732 is made of aluminum alloy which can conduct heat 3 times faster than steel. greatly reduced operating temperatures for high-speed cpu, high-end vga card and high-rpm hard drives. light weight: lightweight aluminum alloy greatly reduces its weight (34% in comparison to casings made of steel). easy installation: removable motherboard tray and mechanical design makes it easy to mount/remove your devices. use thumbscrews for easy removal of side panel. user friendly: stylish top i/o panel provides easy access and flexibility. wonderful ventilation design: 120mm cooling fan space at front. airflow holes in the front and side panel for the better heat dissipation. particular treatment on appearance: cooler master chassis is always enriched by a series of surface process such as hairline, anodizing, chemical polish. longer lasting: using 2mm thickness as a solid constructer makes the chassis durable and sturdy safety assembly: 100% edge bending to avoid scratches