Designed to equalize internal/external pressure and temperature|Ventilators assist in condensation prevention by allowing enclosures to breathe|Suitable for most types of metallic and non-metallic enclosures|Molded in corrosion resistant UV stabilized polycarbonate plastic, finish RAL7035 light gray|Gasket protection to enclosure wall|Mount to enclosure wall thickness up to 0.16 in|Internal vent channel and grille reduces insect intrusion