That is the greatest part of doing one yourself, you can do it ANY way you want.. I made that first one to fit the kitchen window, made sure it was big enough for four and had a handicap ramp for Amy... I couldn't have bought one anymore perfect for mine that that!

The ONLY thing I wished I had done that I didn't do (but just need to add it) is some sides on the higher perches for Amy since she is so unsteady and has come close to falling off several times.