Features: 1. Made of high-quality materials, offering durability and reliable sealing. The overall joint is flat and smooth, resistant to breakage, safe to use, and will not scratch the surface during installation. 2. Helps reduce energy consumption by improving air conditioning efficiency. A well-maintained exhaust system contributes to better cooling performance and potential energy savings. 3. Designed to fit portable air conditioners with an outlet diameter of 15cm or 13cm. 4. The adapter port features internal serrated strips that securely connect to the hose without causing damage. Simply insert the hose slowly into the adapter for a secure and snug fit. 5. For any inquiries, please reach out to the seller through Amazon messaging for assistance. Notice: 1. Actual color may vary slightly from the image due to differences in monitor displays and lighting conditions. 2. Please allow 1-3cm size variation due to manual measurement. Material: PVC Size: As shown Package List: 1 x Air Conditioner Exhaust Hose Adapter