Wide range of diameters and threads: Product fits most brands of portable air conditioners, it is important to check the base diameter (5.9 inches) and the thread direction (counterclockwise) to confirm that it fits your unit. Flexible length adjustment: The exhaust tower has a flexible and can be extended up to 80 inches in length. There is no need to worry about the size of the space. It can easily adapt to different room situations and ensure that air emissions do not easily move away from the living space. Made of high-quality and durable materials: Made of multi-layer steel and stainless steel, it can not only withstand extreme temperatures from -30 ℃ to 140 ℃, it is safe, non-toxic and has no , ensuring environmental friendliness and long service life. EASY INSTALLATION: Installing the exhaust top is incredibly easy. Simply connect the top end to the air conditioner exhaust port and rotate it counterclockwise to secure it. Installation is , requires no additional tools and is