If the cabinet is empty and not anchored to the floor or wall, the weight of the door can present a tip hazard. We recommend anchoring the Agile 52 to the floor or wall to prevent tipping. If you are stacking an Agile Model 40 on top of an Agile Model 52, we recommend bolting them together using the additional hardware included with the Agile Model 40 and anchoring the stacked storage unit to both the floor and wall.