The Helios RR 100 A is part of the RR series of in-line centrifugal fans, offering an affordable and efficient ventilation solution for duct systems up to 315mm in diameter. These fans provide high pressure performance, ensuring strong airflow even when duct resistance is higher than anticipated. The RR 100 A is powerful enough to handle moderate lengths of flexible or spiral ducting, making it versatile for various ventilation needs. Installation is straightforward, supported by a simple mounting system (with optional MK4 foot accessory) and secure duct connections via pipe clamps, making it an ideal choice for effective and easy-to-install ventilation systems.