The Greenwood Airvac CV2GIP Unity Low Energy 100mm dMEV Fan is a round, white electric fan designed for continuous ventilation in any room, bathroom, or kitchen. It features a smart humidistat and timer, along with a timerless control style for added convenience. This extractor fan by Greenwood is suitable for attic mounting and operates with a switch control style. With its 3 speeds and 4 blades, it offers efficient and silent operation at 10 dB. Made from plastic, this centrifugal fan is a reliable and energy-efficient choice for maintaining optimal ventilation in your space.