I am using sheet metal for the new runs into each room.
Should I use flex duct in the last 1' - 1.5' that attaches to the registers?
Hart & Cooley Rezzin registers
Couple of reasons the company gave:
1) Easier for them to put in because my roof sloops down and the attic space is small.
2) If I wanted to paint these clip on so I would be able to take them off for painting. With hard pipe attached, I would not be able to take them off.
3) If I wanted to get the ductwork cleaned in the future, it would be easier to take off.