These are 4x4x7.24" boxes which work great for an Aviculariianae species Juveniles-adults, depending on the max size of the species.
Aviculariianae refers to the subfamily of tarantulas which contains the following genera:
Avicularia, Caribena, Iridopelma, Typhochlaena, Pachistopelma, and Ybyrapora.
Our ventilated versions have two 1" Screen vents available in 4 different colors. We also offer the unmodified box for those who wish to create their own ventilation.