The special feeding door at the front of the lid allows access for feeding and watering, even when the units are stacked. This makes feeding easy and prevents stress since the unit does not have to be moved in order to access it. The angled ventilation provides an optimal air-flow at all times, even when the unit is stacked. Key Features: Ideal to transport terrarium animals or live foods Special feeding door Stackable for display or breeding purposes Side-angled ventilation slits Large door for easy access Clear plastic terrarium,