I'm installing a Zephyr AK6500 range hood. The kitchen is on the first floor a 2 story home, which was built in 1967. I've run 6 in. round ductwork in a joist bay in the kitchen ceiling to the exterior. I still need to cut the hole in the siding and install the wall cap.
The joist bay is perpendicular to the band joist.
My concern is that I will have to cut a 6 in. hole in the band joist to attach the wall cap. Is that size hole okay?
I can't reinforce the band joist from the interior as the cabinets are already up.