1. Waterproof and Secure Connection: This duct fan hose adapter is made of ABS material, providing a secure and waterproof connection between the wall and the ventilation vent. It effectively prevents air leakage and enhances the overall efficiency of your ventilation system. 2. Easy Wall Mounting: Designed for simple installation, this adapter can be quickly mounted on the wall. It saves time and effort during setup, offering a hassle installation experience. 3. Size Options for Compatibility: Available in 100 mm or 150 mm specifications, this ventilation adapter is compatible with various sizes of ducts and vents. It provides flexibility and versatility to meet different ventilation system requirements. 4. For Ventilation Systems: Specifically designed for ventilation systems, this duct fan adapter is for kitchens, bathrooms, and other areas where good air circulation is essential. It helps improve air quality and maintains a comfortable living environment.