1. Waterproof and secure connection: Made of ABS material, this long duct fan hose adapter ensures a secure and waterproof connection between the wall and air vent. It effectively eliminates air leakage and improves the overall efficiency of the ventilation system. 2. Easy wall mounting: Designed for easy installation, this ventilation port can be conveniently mounted on the wall. It saves time and effort during the setup process and provides a hassle installation experience. 3. Size Options for CompatibilityAvailable in 100mm or 150mm specifications, this wall flange vent connector is compatible with various sizes of ducts and vents. It offers flexibility and versatility when adapting to different requirements for the ventilation system. 4. IDEAL FOR VENTILATION APPLICATIONS: Specially designed for ventilation, this duct fan hose adapter is for use in kitchens, bathrooms, and other areas where good air circulation is crucial. It helps to improve air quality and maintain a pleasant living environment.