I'm installing an exhaust fan and using rigid 4" ducting. The ducting has a tapered end, which I assumed goes into the ducting attached to the outside vent, but I don't know how to secure the non-tapered end to the fan itself, as both the ducting and the connection on the fan are 4" exactly, I can't fit one inside the other. How is this supposed to be done, is there a coupler of some kind that I need?
No announcement yet.
Connection ridgid ducting to exhaust fan