actually its the fan itself that looks questionable, not necessarily the size of the hole. I bought one of those crappy fans and it didn't last until morning even. I like the honeywell fans, also the PC fans that they sell at Radioshack 5" square manage to move a fair amount of air around. The rubbermaid is a great place to start, but keep in mind that if you don't train your plants fairly early that you'll run out of space before the end of the process.....

:thumbsup: