Males stay smaller than females. 2x3x14 will most likely be sufficiant for a male. If he gets big enough then a 2x4x14 would be fine. I keep my big female, 6.5' 12.5lbs, in a 2x4x12, and she is doing just fine. I buy all of my cages from Reptile Basics. They are great. Hope this helps.![]()