The Vent-Axia 498095 NBR dMEV C100 Low Carbon Continuous Extract Filterless Fan is a high-quality extractor fan designed for improving air quality in homes. With a timerless operation and programmable timer features, this electric-powered fan offers efficient ventilation with its centrifugal design. Made from durable plastic with a glossy white finish, this round-shaped fan has a 4-inch diameter and operates at 230V with a single speed setting. Ideal for continuous ventilation systems, this A-rated energy-efficient fan from the United Kingdom brand Vent-Axia is a reliable option for maintaining healthy indoor air.