Powerful Airflow: Powerful in-duct mounted mixed flow extractor fan designed to provide an airflow rate of 187 m³/hour, higher working pressures for applications that require high air flows, with low relative noise. can be mounted in a variety of applications and are suitable for use with either rigid or flexible ducting (100mm diameter) Robust Design: The body is made from low-flammable polypropylene and is designed to accommodate all standard 100mm duct sizes. It includes a removable central section for effortless cleaning and maintenance. Rated IPX4, complying with Building Regulations Parts F and L.