We absolutely love this cage and most of all our 4 budgies love all the room they now have.  The assembly of the cage was not very difficult,however, the bottom back panel was missing 2 holes for the top panel to fit into, and 2 holes were only half way drilled through on the side panels.  My husband had to drill the holes into the panels to finish the assembly.  It did surprise us that the manufacturer of this cage would allow it to leave their warehouse without the quality control check it should have received.  Once assembled, the cage is very good quality, looks nice and has strong casters for rolling around. [...]