This is a full size 4U industrial rack mount case, built with heavy duty 1-2 mm- metal sheet- It is one of the largest 4U cases with ample space inside, it supports most of the ATX, Baby ATX and Micro ATX sizes of motherboards up to 12 x 13 in- Two 120 mm- large size fans mounted in each side of the HDD trays to cool off the hard drives installed- There are 4 fans installed in the middle and two additional fans mounted in the back of the case to circulate the air inside- There are two doors with meshed design and air filters- The locker with keys is installed to protect the access of your computer-Features- Superior Expandability with 10-11 Drive Bays-- Efficient Ventilation-- Frontal USB 2-0 Access-- Dimension - 21-5 x 30-5 x 10-5 in-- Item Weight - 38 lbs-Specification- Chassis Type - Rack mount-- Color - Front black, body is SGCC-- Form Factor - 4U-- Drive Expansion - 2 x External 5-25 in- Drive Bays-- 10-11 x Internal 3-5 in- Drive Bays-- Expansion Slots - 7-- Front Ports - 2 Front Access USBs- SKU: LGSC001