Vent Systems 4" Inch (Opening Dimensions) - Pack of 5 - White Soffit Vent Cover - Plastic Round Air Vent Grille - Built-in Mesh Screen - HVAC Register Louver for Bathroom, Home, Kitchen

COMPATIBLE WITH UP TO 4" OPENINGS: Circular vent cover fits round ducting systems equal or smaller than 3.94" inches. Screw hole spacing is 4.53" and the exterior grille diameter is 5.28". Pre-drilled hole diameter is 0.14". Perfect for HVAC exhaust or intake installation in any room, ideal as a ceiling or wall air vent grille.
DURABLE & LIGHTWEIGHT PLASTIC: Made from quality plastic; weather-resistant and long-lasting. Built-in mesh screen keeps out debris and dust, making it great for attic, roof, and bathroom ventilation. Temperature resistance from -4°F up to 158°F.
BUILT-IN PROTECTIVE SCREEN MESH: Fine mesh backing helps block unwanted debris and particles while allowing smooth, efficient airflow.
EASY WALL OR CEILING MOUNTING: Can be quickly installed in various spaces without special tools, making it perfect for fast home or office upgrades. (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.