Prevue Big Steps Playpen is a great size for cockatiels, small  conures and similar sized parrots. Four big steps bring your pet to the  top perch where two treat dishes await (one dish shown). The playpen  also includes a toy to keep your bird busy.

The base is 18 1/2 W x  15 D. The overall height is 15 inches. The steps are 1/2 inch diameter  while the top perch has a 3/4 inch diameter