My birds love it.    I put together by myself.  Took about an hour and a half (Wasn't difficult) once I figured out what pieces went where. Nothing was labeled.   My  very last screw got stripped So I  can't  screw it in  all the way or take it out, but it's at the top so not noticeable.  I was given extra screws. So if I can  remove it, I have another to fix properly.  The only reason I gave a four star and not a five star is  there is no access to back of cage.    No openings.   None on sides either.   So to hang toys or perches on back and top is very difficult.    This will make it harder to clean as well.       My arms just aren't long enough.    Lol.   The cage is huge.  And birds , although have lots of stuff to climb and play on , still have room when the get the urge to use their wings.