For connecting a portable A/C exhaust tube to an outside wall. Not for extending tubes by joining two together.
Secure fit on 6-inch tubes with no leak. Outer diameter 156mm. Inner diameter 149mm (5.87inch). The inner diameter does not take the thread into consideration and is the maximum diameter of a compatible tube.
Counter-clockwise thread outside inwards. No need for duct taping. Screw on, screw off.
NOT meant for clothes dryers. 3d-printed.