Model Number WMZ955-PP12C6 RoHS Compliance Yes Form Factor 9U Industry Standard ANSI/EIARS-310-D, IEC297-2, DIN41491, DIN41494, PART7GB/T3047.2-92 Material Posts:1.5mm SPCC High-Quality Cold Roll Steel Enclosure:SPCC 1.2mm Loading Capacity 130 lbs Supported Chassis Depth 16" and under Internal Dimensions Depth: outer post-to-post 15.5" max. 11.5" by default Cooling Optional 2x120mm 120V AC fan can be installed on the top (p/n: WA-FANAC120) Notes - HTS code: 8473.30.5100 (ECCN is not applicable). Item Dimension (L"xW"xH") 25 x 27 x 23