The Vent-Axia 498095 NBR dMEV C100 is a round, electric extractor fan with a 4-inch diameter and a glossy white finish. It is designed for continuous ventilation with a timer control and programmable timer features. This energy-efficient fan has a power of 100W and is made of plastic, providing efficient air quality improvements for any room. Manufactured in the United Kingdom, this centrifugal fan by Vent-Axia is ideal for keeping air clean and fresh in homes and buildings.