Warm Tips Our mobile air conditioner hose has a counter-clockwise thread direction. Air conditioning hoses come in two sizes, 13cm and 15cm (outer edge to outer edge) in diameter . Pleasetake accurate measurements before buying, so be sure to verify this is correct for your air conditioner before purchasing. High Quality PP MaterialThe drain pipe is made of reinforced polypropylene with built-in high quality steel ring, more stable than soft material pipes on the market, which has excellent heat resistanceand corrosion. It is a good replacement when the essential mobile air conditioner drain hose is cracked. Good ScalabilityThe hose for mobile air conditioner is retractable, shortens to 30/38cm and can be extended to 150/200cm, which makes it easy to extend the exhaust hose to fit wherever you want, flexible at home or in the office,the expandable air conditioning hose adapts to any space. Easy Installation Extend the purchased exhaust pipe to the required length, then align it with the connecting pipe, snap it into place and twist the pipe counterclockwise to secure. Unlimited connectionThe two pipes can be connected to each other to achieve the extension effect, and the pipe can be extended to 300cm or 400cm without using a connector, and are sealed well and do not leak not. Note Please accurately measure your air conditioner pipe diameter and installation direction (counterclockwise) before purchasing