KK-7399 is solidly constructed with 0.5SGCC steel and finished in "all-black" chassis interior. It supports longer high-end VGA cards up to 360mm and has enough expandability to support 4 x 5.25", 1 x 3.5" device and 4 HDDs. The airflow and performance of KK-7399 are simply superb including front in-take 12cm LED fan, rear exhaust 12cm fan, top exhaust dual 14cm fan and dual side exhaust fans.Water-cooling holes are pre-drilld to support high-end water-cooling systems. Ths chassis is providing "SCREW-LESS" for 5.25" and HDDs which makes installation an ease. The I/O ports re located on the top panel for easy access. Power supply is mounted on the bottom with dust "DUST FILTER" provides a separately ventilation.