it fits securely in my suitcase. I wish some of the holes were in more convenient locations so I can position the cage in more than one location and more securely than a single screw. but it fits and leaves air between my panes. It accommodates 5-3.5 drives with plastic rails that fit into the holes in the drive, allowing for a secure hold and easy insertion and removal of drives without screws. You can still put a screw in the middle hole for extra security.