Features:

4U rackmount design Lockable front panel door.
Easy-accessed front changeable air filter.
Replaceable AT / ATX back panel window.
Front-accessible USB ports.
Shock-resistant disk drive bay.
Easy-installed internal 6-bay HDD cage.

Specifications:
Form Factor: 4U chassis support for max motherboard size 12" x 10"
Drive Bays: 3 x 5.25" open, 1 x 3.5" open, 7 x 3.5" HDD internal bay
Expansion Slots: 7 Front Ports: 2 x USB + Audio Cooling System: 1 x 120mm front fans + 2 x 80mm + 2 x 60mm fans Dimensions: 19" x 7" x 18.5" (WxHxD)