Features: 1. The pipe connector is made of high-quality materials, which have a certain strength and tightness. The connector is flat and smooth overall, not easy to break, safe and durable, and will not scratch the surface of the installation object. 2. Professional accessory: a connector for connecting the window sealing plate and the air conditioner exhaust pipe with a diameter of 13 cm/15 cm. 3. Advantages: Proper sealing of the air conditioner duct can help reduce energy consumption, and a well-structured exhaust system can reduce your electricity bill with an efficient cooling system. 4. Various specifications are available to choose from. You can purchase the appropriate air conditioner hose adapter according to your needs. 5. Convenient installation: A toothed rod is located in the connection hole between the connector and the pipe, which fits perfectly without scratching the pipe. Simply insert the pipe slowly into the connector, and it's ready to use after installation.