Maxx Air VX25 Series Static Attic Vents are built for the ventilation of residential attic spaces up to 500 sq. ft. Our low profile steel dome is aesthetically pleasing on your house's roofline, withstands impacting wind, debris, and hail, and has a galvanized steel mesh screen to protect against insects, birds, and rodents. Install requires no special tools to complete, making it a perfect home improvement project for your typical DIYer. This roof vent is designed to create constant airflow in the attic, prolonging the life of roofing components and saving you energy costs by reducing strain on heating and cooling systems. Add a rain guard (XXRAINGUARD) for installs on steeper roof pitches.