Sure but depending how aggressive you feed it, don't expect that size to last over a year. The rule of thumb I use is add up the length + width and that is the max length of the boa. You want the boa to be able to stretch out fully using the length and width. So for example, a 4x2 cage would comfortably house a 6' boa. Of course adding a shelf or perches etc will increase the overall floor space but i'm rambling...bottom line is yes.