For connecting a portable A/C exhaust tube to an outside wall. Not for extending tubes by joining two together.
Secure fit on 5-inch tubes with no leak. Outer diameter 138mm. Inner diameter 130mm (5.12inch). The inner diameter does not take the thread into consideration and is the maximum diameter of a compatible tube.
Clockwise thread outside inwards. No need for duct taping. Screw on, screw off.
This is an intulon brand product and has not been licensed to be sold by anyone else. Buying from any seller other than Intulon LLC or Amazon.com will only get you a fake product.
NOT meant for clothes dryers. 3d-printed.