UNIVERSAL SIZE & ADJUSTABLE LENGTH: With a diameter of 15 cm / 5.9 inches, stretched to a length of 200 cm / 78.7 inches, it can be connected to most brands of portable air conditioners. (Note: The outer diameter is 15 cm, please measure it before purchase!) EASY TO INSTALL: To extend the length of the air conditioning hose, align the front connector of the existing hose and turn it counterclockwise until it clicks into place. Stay cool and comfortable in the summer heat! (The threads of the exhaust pipe are rotated counterclockwise. Please make sure it is the correct pipe size and thread before purchase!) HIGH QUALITY: The exhaust pipe is made of high-quality PP material. The interior is wrapped with spiral steel wire, which is an environmentally friendly, sturdy and durable material, which has great flexibility and portability. It has super heat and abrasion resistance and will not be damaged or leak after prolonged use, ensuring a longer service life. LONG LASTING: Our exhaust