About this itemMake Sure It Fit: Make sure your original hose diameter is 5.9 inches/15cm from the outer edge to the outer edge, which means it can fit most portable air conditioners. Our AC exhaust vent has an anti-clockwise thread direction so make sure to check this is correct for your AC before purchasing.Length Adjustable Hose: The shortest length of the exhaust vent is30cm and can be extended up to 150cm, easy to stretch and shrink, which makes it stored without occupying extra space when not in use.Long Lasting: The exhaust hose is made of thickened polypropylene with a built-in high-quality steel ring, which has better heat resistance, wear resistance, aging resistance, and longer service life. It can withstand long-term hot airflow, wear, and tear w.