I've heard many times that ventalation is not all that nessecary infact alot of ventalation will do more bad then good. For ackies you want the humidity at at least 50%, and some more wouldnt hurt either, infact 55%-60% should be just fine. Too much ventalation will compromise those factors. Maybe cut a small rectangular hole and put wire mesh on it. Most custom wood tanks are not air tight anyway. That alone should allow air flow. So will opening the doors for feeding, and maintnence. I have a pair of ackies that will arrive on tuesday and i have a custom wood tank bought from a builder years ago with two 8x6 inch vents on each side and im going to cover most of it up to keep the humidity high.
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2.2.1 Bearded Dragons
1.0.0 Lemon Pastel Ball Pythons (NERD Line)
0.0.1 Water Monitors
1.0.0 Pastel Red Tailed boa Het. for Albino
0.0.2 Yellow Ackie Monitors
And Counting...