The Vent-Axia 498095 Lo-Carbon NBR dMEV 100mm Extract Fan is a square-shaped, continuous venting fan designed for use in bathrooms or toilets. Made of white plastic with a glossy finish, this electric-powered fan operates at a power of 7W and has a 4-inch diameter. It can be mounted on the wall or ceiling, and is part of the Vent-Axia brand's line of axial extractor fans. With a voltage of 240V, this fan helps improve air quality by efficiently removing excess moisture and odours from the room.