as I am sitting here splining in screen right now,lol. Go with aluminum screen and think about color. Lowes sell a charcoal and a plain aluminum color screen. I use the charcoal myself but it isnt as "bright" inside as sum I have done for friends who went with the plain. Therefore I use a 10.0 and have no problems, Happy splining and don't poke yourself to many times,lol. And just a FYI I learned from Jdog's youtube vids on how to make them,just went to a 2x2x4. Copying his drainage system after I get this last cage built.