It’s beautiful! Easy and quick assembly.  All pieces came in perfect condition.  Took maybe 40 minutes and it was done.  The casters make it easy to move around.  I added zip ties to secure the cage to base.  Plenty big enough for my 4 budgies.  They love all the space and the ability to fly around.  I think 4 birds is where I’d stop for this cage size- with all the swings, toys, perches and food/water bowls that take up space within the cage.