No - a hole saw is $4 and $10 for shipping on Ebay.
I don't have a sawzall. I only have a jig saw.

Walter
"RBM" wrote in message
...
If you want to do it with a hole saw, use a 4 1/2", but it'll cost you.
You could do it with a sawzall or similar.


"Walter Cohen" wrote in message
...
Due to logistical reasons in my attic I need to route the new bathroom
fan exhaust duct up through the roof instead of out the side wall. It's
also a shorter run if I go vertically instead of horizontally.
I'll be buying 4" aluminum ducting so when I buy a hole saw to cut the
roof hole do I buy one that's 4" round, 4 1/4", or 4 1/2"?

Anything else I should do or watch out for?

Thanks.
Walter