The Helios FM 200 is a flexible sleeve designed to minimize the transmission of vibration between ventilation fans and duct systems. It is intended for use with corresponding FR flanges mounted on fan spigots to ensure a stable and secure connection. Constructed for durability and performance, the FM 200 is supplied in pairs and includes worm screw clamping bands for fast and reliable installation. Available in sizes ranging from 100 mm to 710 mm, this sleeve provides an effective solution for vibration isolation in commercial and industrial ventilation setups.