The Helios LFBR 355 F7 is an inline bag filter designed for circular duct installations within ventilation systems. Both ends are equipped with spigots fitted with double lip rubber seals to ensure a tight connection with matching duct sizes. The filter’s casing is constructed from durable galvanised sheet steel and includes an access panel with a clamp for straightforward filter changes. The bag filter media is made from synthetic fibre, rated ISO ePM1 50% (F7), with a material density of 64 g/m². It offers a dust storage capacity of 88.6 g/m², ensuring effective particulate capture and prolonged filter life.