This small vent is intended for installation in a small utility trailer. Although I can not yet report on how it works when installed, I found the battery operation of the light, fan and directionality of airflow works well. No sunlight indoors so do not yet know how the solar works. The fan makes minimal noise when the unit is held as it will be when mounted, however that disappears to no sound when tilted as little as 5/10 degrees.