Made of excellent ABS plastic and it is very durable Suitable for air conditioning exhaust pipes with a diameter of 15 cm, and a suitable size will have a better sealing effect Both ends are designed with Buckle and knob, making installation simple and convenient Helps prevent debris from entering the exhaust duct and improves the efficiency of the aircon Universal for all windows or balcony doors Description: 100% Brand new and high quality Features: Material: PVC Color: gray Size(appr.): 15cm x 21.5cm x 7.5cm/5.91" x 8.46" x 2.95" Fit for exhaust duct with diameter of 15CM Features: [Excellent Quality] Made of excellent plastic material, it is very durable and won't scratch or damage the window. [Universal] Window Adaptor works with every portable mobile air-conditioning unit, airlock/hot air stop and also compatible with most Windows; [Quick Easy Installation] Helps to install/disassemble tyres, especially in low sidewalls and flat runs. [Application] Suitable for 15CM diameter exhaust pipe, easy to install at home or other indoor/outdoor car; [Advantages] A good air conditioner hose seal could helps to reduce energy consumption and also a well-constructed exhaust ventilation system could save your electric bills under efficient cooling system. Products included: 1X Exhaust Pipe Adapter Notice: - The pic has clearly showed the size, please confirm the size before you order it. - Please allow 1-3cm difference due to manual measurement. - The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.