Three panel doors secured by one standard padlock. The unique design ensures high capacity to weight ratio and maximum internal to external volume. The cage has multiple shelf positions, and the shelves are removable. Ideal for transforming a 10ft or 20ft container into a mobile warehouse with full access through the center aisle in transport or storage. Eight cages fill up one 20ft container, leaving the center aisle open, while twelve cages fill the container completely; reduce the quantity of cages by half for 10ft containers.