ADJUSTABLE LENGTH: The portable air conditioner hose is easy to stretch and contract. The shortest length of the exhaust hose is 12 inches/30 cm and can be extended to 59 inches/150 cm. COUNTER-CLOCKWISE: Our replacement hose is threaded counter-clockwise. Please check the thread direction of your hose connector is ANTI-OFF before purchasing. HIGH QUALITY MATERIALS: Made of high quality polypropylene, our air conditioner hose can withstand temperatures of -20-90℃, durable and long lasting. Excellent heat resistance and flexibility enable the hose to withstand long-term heat flow, wear and tear, making it less prone to leakage. EASY TO INSTALL: Extend the air conditioning hose to connect to the existing vent (or connect it to the existing hose), align the front end of the hose, and then install a specific coupler (to be purchased separately, usually supplied with the air conditioner). Turn counterclockwise until it clicks into place. UNIVERSAL COMPATIBILITY: Our hoses are suitable for