I have a 40 gallon tank (dimensions 36x18x16) that I'm going to convert into a vertical vivarium, but I want to make sure that there is enough ventilation for whites tree frogs. I'm roughly following DigitalPunk's build plans here except without the false bottom (I'm using a LECA drainage layer instead).

My initial idea was to do a 6" strip of sealed glass at the bottom, then a 24" tall door, then the top 6" a screen panel. Not counting the screen's frame, this would leave roughly 5x17" of screen for ventilation. I'm worried that this won't provide enough ventilation for a pair of whites tree frogs. Will the screen area need to be larger or will this be enough?

Thanks in advance for any advice! This is my first vivarium build.