Well, for an iguana I would think it needs more height. A juvie would be ok I guess. I see that and it screams monitor to me. But use thick glass if you do!! Tail strikes are a problem lol.
It looks really sturdy! Read: heavy. What is your floor weighted for? Compared to hockey mask guy that thing is big.... You might have to brace your joist.
Yeah I'm leaning more towards monitor now. Currently researching husbandry.