andy everett wrote:
I would like to shift some galvanized 6 inch round duct in a joist
space. I would like to splice in some 6 inch flex aluminum duct at
each end so the duct could be shifted one way or the other for some
hi-hat lights. Would doing so violate code or good practice?

Thank you for any help.

Bad practice in my opinion. No matter how you do it, it is going to
case some additional restriction. To reduce the restriction and possible
future problems, I suggest using a pair of elbows at each end.


--
Joseph Meehan

Dia 's Muire duit