The 2-post server rack shelf allows you to add a high capacity mid-mount fixed shelf to almost any standard 2 post server rack. EIA 310 Compliant Our 2U rack shelf is EIA 310 compliant meaning it can fit most standard 19-inch 2 post racks. The included mounting brackets can be adjusted to accommodate different post depths, making this center mount rack shelf a universal solution for 2 post cantilever rack storage. Solid Steel Construction Constructed using SPCC commercial grade cold-rolled steel, this durable 2 post network rack tray can hold up to 75 lb. (34 kg) of equipment and has an internal depth of 20", making it an ideal solution for storing larger non-rackmount equipment, tools, peripherals or accessories in your rack to keep them readily accessible..