11" wide and 24" wide. A 55 gallon aquarium will house you boa for a while, but extra floor space would be much appreciated. Even a 4.5' or 5' small male would be tight in a 55 gallon aquarium. Also, boas (BCI and BCC) are terrestrial. They appreciate surface area, not height. If you have an option between a tall cage and a wide cage, get the wide cage. Your boa will grow slowly if not fed weekly. That just makes sense. If you ate half while you were growing up, would you have grown as quickly? The boa may still get big, but not as quickly as a boa fed more often. And females usually get much larger than males. When it is time to upgrade, look at boa specific cages. Not only are they made for boas, much are more economical than buying a 125 gallon or larger aquarium. Good luck with your boa.

Phil Goss

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