I just drilled one hole and used some mesh behind it to keep stuff out of it. It made a noticeable difference in temp.
Stan,
That looks really well executed. Is that window screen mesh painted black? Would you mind posting a photograph of the inside so we can see how you secured the mesh?
That looks like about a 1-inch diameter hole. Am I correct?
Well done, sir!
David Thompson, AG7TX
Jack of All Trades
Master of None
dbthompson@...