I have one for my crested gecko on a converted 20 gallon and its been holding up well for a little over a year. My only complaint is that the door is a little too big (there's not enough of a substrate tray). The bottom vent holes are about 3 inches from the bottom so my substrate covers them up, and i have leaves fall out whenever I open it up. I think you can ask for custom dimensions.
I’m super happy with my vertical build. The frogs use quite a bit of the height. There’s a ledge in top that they love.I got Ranitomeya Vazos and they definitely take advantage of all niches.Thinking of converting a 40gal aquarium into a vivarium and would like to go vertical if the froggies like it that way. I would include climbing wood & vines... Don't have frogs yet, just researching.