100mm Ventilation Mouth. Made of ABS plastic. With protective grille. Detachable black tube, easy to clean. Ideal for ventilation and evacuation. Venting Mouth Ideal for all ventilation pipes of clothes dryers, ventilation openings and exhausts for bathrooms, air conditioning systems, kitchen fans, and exhausts, all wall ventilation openings for households, heat transfer and ventilation systems, extractor hoods, and a variety of other appliances for industrial applications. High quality ABS plastic vent cover, mosquito net is detachable, very convenient for daily cleaning. Easily installed from ceiling or sidewall. Unrestricted airflow for your ventilation system louvers spaced 45 degrees apart to provide maximum airflow. Installed as an air inlet or outlet, the exhaust hood must cover the ventilation system to prevent rodents and insects from entering the house. Quality Materials Ventilation holes are made of high quality ABS. Available in different sizes for customer selection. With Protective Grille The ventilation outlet has a fine mesh to prevent mice and birds from entering your home, and shutters to prevent rain and unwanted drafts. Easy to install and clean The black sleeve is detachable, easy to clean and maintain. Wall or ceiling mounted, perfect for bathroom, office, room exhaust and ventilation use.