Ideally I would like the vent assembly (shown on the right) to be positioned where the batten is because the assembly would then be in the middle of the ceiling below. The assembly fits snugly between the two joists.
I cannot see other similar battens this like but I don't want to remove it and find I have made a big mistake!
I cannot see other similar battens this like but I don't want to remove it and find I have made a big mistake!