Cage size for adult

I'm planning on hopefully getting a baby bci soon. Of course, it will take a bit before it needs a huge cage, and I'd probably keep it in a tub at first.

For an adult, would a t20 be sufficient for when it reaches adult size?

I don't know what the size is for that cage (T20), but I say at least 4' long for males and 6' for females or large males.

My cage for my largest male is 4' long, 2' deep, and 18" high.

Yeah a T20(72"x24"x24") should be big enough for an adult.

The T20 will be large enough. You wanna buy me a couple? LOL