1. Thickened treatment with reasonable transition, suitable for transitional connections in pipes. 2. Made of high - quality materials, environmentally friendly, non - toxic and sturdy. 3. Easy to install. Connect the duct adapter with duct tape or duct clips. 4. Ideal for HVAC systems in bathrooms, kitchens, apartments, homes, offices and hotels. 5. Perfectly fit for connecting pipe systems ranging from 150 mm to 100 mm. 6. Color: White 7. Material: Plastic 8. Dimensions: 150 - 100 mm, upper diameter 97 mm, lower diameter 155 mm, height 117 mm 9. Package contents: 1 pipe adapter. Only the above - mentioned package contents are included, and no other products are included. Notes: 1. Lighting during shooting and different displays may cause slight differences between the color of the item in the picture and the actual product. The measurement error allowance is ±1 - 3 cm. 2. Our products are made of the highest - quality materials to provide you with the best possible user experience. We strive to ship the order within three days after it is placed, and the estimated delivery time is 8 - 15 days. 3. When shopping, please pay attention to the size and specifications of the product to ensure that it meets your needs. In the title and description, we have provided detailed information about the product, including its features and specifications. We hope you are completely satisfied with your purchase. Therefore, if you have any questions or concerns, please feel free to contact us. We are always at your service and will do our best to assist you. Thank you for choosing our products. We hope you like them.