The Vent-Axia Lo Carbon Revive 7 is a square-shaped electric extractor fan designed for wall mounting. With a 4-inch diameter and a glossy white finish, this energy-efficient unit boasts a high energy efficiency rating and operates using a switch control style. Made from plastic, this continuous vent style fan is suitable for use in homes and buildings in the A-G EC range, offering universal smart home compatibility via Clear Connect protocol. With 5 or more blades and a focus on improving air quality, this unit from Vent-Axia is a reliable choice for maintaining a healthy indoor environment.