The Helios FM 160 is a flexible sleeve designed to minimize vibration transmission between fans and connected ductwork. It is intended for use with FR flanges (accessory) mounted on fan spigots. Each set includes a pair of sleeves with integrated worm screw clamping bands, ensuring a tight and stable fit. Suitable for a range of ventilation systems, the FM 160 is available in sizes from 100 mm to 710 mm and is an ideal solution for enhancing operational quietness and system longevity.