The Helios FM 150 flexible sleeve is designed to reduce vibration transmission between fans and ducting systems. It is compatible with matching FR flanges (accessory) installed on fan spigots. Supplied in pairs, each sleeve includes worm screw clamping bands to ensure a reliable and secure installation. Available in sizes from 100 mm up to 710 mm, the FM 150 provides an effective solution for vibration control in ventilation setups.