4U 13BAY Rackmount 650W EPS12V Black (ATX & EATX Motherboards)
By Antec

4U22EPS650 Rackmount Enclosure have been an important and growing niche market for years. The explosive growth of networking, ISP and telecom applications have taken rackmount enclosures into mainstream. Now, Antec proudly brings its reputation for quality and value to this market. Our design and production skills are combined to produce our line of solid, superior rackmount cases. ... 

3U RM Xeon-DP U320 SCSI Bays 7FH/FL I/O 800W RPS Black
By Supermicro

Supermicro's SC836 is the newest product-line in high-end 3U chassis equipped with 16 hot-swappable hard drive bays. With 100% cooling redundancy and an 800W high efficiency redundant power supply, the SC836 is optimized for the next generation dual-core Xeon platform. ... 

4U IPC ATX Rackmount Case - No Power Supply
By StarTech.com

Keep your rackmount PCs protected from dust and damage with the StarTech.com RMC4000I, a 4U rackmount case for industrial PCs or servers. The 1mm steel chassis provides a rugged, dust-free enclosure while allowing a superior airflow for reliable, stable operation in harsh environments. With a reliable 12cm front fan and a lockable front panel door, the RMC4000I will keep your PCs and servers running smoothly even in the harshest industrial environments. ...