The included mounting brackets can be adjusted to accommodate different post depths, making this 2U shelf a universal solution for 2 post rack storage, while the vented design helps to improve airflow in the rack. Constructed using 1.6mm SPCC commercial grade cold-rolled steel, this durable 2 post rack shelf can hold up to 67kg (150lbs) of equipment - a perfect solution for storing non-rackmount equipment, tools, peripherals or accessories in your rack to keep them readily accessible.