Easy come easy go

[gregzz4]

I can't find a pic for you on the net, but there is a trapezoid-shaped door you can buy @ Home Depot ( at we can here in BC ).
Do you remember when we were kids, and you had to open the little door in the screen to open and close the window?
I was originally thinking about using one for each side of my tank and make the whole top out of bug screen with no eggcrate.
I bailed on the time-consuming idea for now, but I may do it later on.