Premium Material: Constructed from high-quality ABS material, the soffit exhaust vent is both durable and easy to maintain, ensuring long-lasting performance Built-in screen: built in a removable plastic grid/screen, Perfectly to block big things into your room, make your living more comfortable. Easy to Use: The 4 inch soffit vent's white panel is designed for easy detachment, providing convenient airflow adjustment to suit your needs Easy to use:Panel and black sleeves are detachable, easy to clean and maintain. Widely used:Wall mounted or celling mounted, perfect for bathroom, office, room exhaust and ventilation use. 4 inch Soffit Vents , ABS Air Vent Cover Round Vent with Built-in a Fly Screen for Bathroom Office Home(ø100mm)