Ok here is what I did for a friends tokay. We took a 20L turned it up on its side. Had a piece of plexi cut to fit the width of the tank and 3" high for the subtrate barrier. We used one of the screen tops with the built in hinged door attached that to the tank with standard tank clips on the sides 2 on the top 2 on the bottom. when done you have a vertical enclosure that is easy to feed and not to bad to clean. I will dig thru my pictures I think I have one of the finished product.