Dd a high capacity mid mount vented shelf to almost any standard 2 post server rack the cabshf2postv 2u heavy duty mid mount vented rack mount shelf for 2 post racks allows you to add a high capacity mid mount fixed shelf to almost any standard 2 post server rack 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