Vent Systems ø100 mm / 4'' Inch White Soffit Cover Pack of 50 Round Air Louver Grille Built in Insect Screen HVAC Vents for Bathroom, Home Office, Kitchen

COMPATIBLE WITH UP TO 100 mm / 4" OPENINGS: Circular vent cover fits round ducting systems equal or smaller than 100mm / 3.94". Screw hole spacing is 115mm / 4.53" and the exterior grille diameter is 134mm / 5.28". Pre-drilled hole diameter is 3.5mm / 0.14". DURABLE CONSTRUCTION: Made from quality and lightweight yet impact-resistant plastic. The UV-stabilised and weather-resistant body prevents fading, cracking or discolouration. Great for attic, roof, and bathroom ventilation. Temperature resistance from -4°F up to 158°F. BUILT-IN PROTECTIVE SCREEN MESH: Equipped with a fine mesh screen to block unwanted debris and particles while allowing smooth, efficient airflow. EASY WALL OR CEILING MOUNTING: Designed with pre-drilled screw holes and concealed covers for a neat, professional finish. Can be mounted quickly using standard screws. (SCREWS NOT INCLUDED). Suitable for both wall and ceiling installation. MULTI-ROOM HVAC APPLICATIONS: Ideal for home improvement, such as in the bathroom, kitchen, garage, shed, office, and RV to improve airflow and ventilation efficiency. Provides a secure fit for wall, ceiling or soffit installations, ensuring proper airflow for both intake and exhaust applications indoors or outdoors.