Add a high capacity adjustable depth vented shelf into almost any server rack or cabinet the adjshelfhdv 1u adjustable heavy duty vented rack mount shelf lets you add a high capacity adjustable 1u shelf to virtually any standard 19 inch server rack or cabinet this heavy duty rackmount shelf can be adjusted from 195in to 38in mounting depth to fit your rack while the vented design improves air flow and help to lower temperatures in the rack constructed using 12mm spcc commercial grade c