Portable air conditioner exhaust pipe interface Square exhaust pipe Note: This product page only sells square sizes, if you need other sizes/colors, please refer to the QA. 5.9 - 6 Hose: Fits on the back of many portable air conditioners. Fits clockwise and counterclockwise hoses. No tools required. Sin drilling. Connects to the exhaust hose and can be easily installed in The back of the portable air conditioner. This adapter can tightly connect the exhaust hose to your air conditioner unit, so your air conditioner unit can be more efficient and cool your room in a short time. in ABS material. Durable and economical, it can be used for a long time. It can be applied to home, office, etc. Specification Project Name: Exhaust Hose Interface Material: ABS Round: 15.5 x 4.3cm/6.1 x 1.7 inches Application: Round Bottom: For 6 Diameter Exhaust Hose; Package includes: 1 exhaust hose connection Note: Please allow 1~3cm error due to manual measurement, thank you. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.