The Vortice 11940 Quadro Micro 100 T Centrifugal Fan with Timer is a high-quality extractor fan designed by the reputable brand Vortice. With a diameter of 100mm, this fan is perfect for improving air quality and circulation in small to medium-sized spaces. The built-in timer feature allows for added convenience and energy efficiency by automatically shutting off the fan after a set amount of time, making it ideal for use in heating, cooling, and ventilation applications in the home.