A rose box is THE lowest point in a ships bilges. Our toys don't usually have them in scale locations, but they do exist in a form. Rose Boxes collect all the bilge water and trash that occur. They get plugged and have to be cleaned out manually (yuck). Same with our toys. Here is my solution to the problem. After installing bilge pump clogs never happen. Perfed Aluminum has holes that are .060 inches in diameter.
Mc master Carr. It only comes in a 4 foot square sheet. But it comes in a flat cardboard sleeve that stores well. Yeh I know 16 square feet for a couple of square inches, but it won't rust?
I used to go dumpster diving at Auto Stereo shops for speaker grills. Free and they are easy to cut to fit. Only down side is they tend to be painted steel, and rust out in about three seasons.
Thanks, I saw it on McMaster but the size seemed a little excessive. Should last me a couple of build seasons at least
You can also find perforated and expanded metals at your local art supply store in smaller quantities.