Foldable warehouse cages are easy to use and save a good deal of space. To unfold a folded cage for use, two people are required. The procedure: the two operators stand on opposite sides of the cage, raise the front mesh panel first, then raise the connected side and rear mesh panels, flip the two side panels into the cage base while lining them up with the front panel, and finally insert the front panel's door latch into the side panel. A properly unfolded foldable warehouse cage must sit flat and even at all four corners, symmetrically aligned. If it sits unevenly, do not use it. Check whether the mesh panels and door latch are fully seated; careless use of an uneven cage can cause an accident.