About this item：Make 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 is 11.8 inches/30cm and can be extended up to 59 inches/ 150 cm, 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 h.