The Elta 068‑0250-JF4 is a 1200mm long silencer with a 250mm diameter, designed to bolt directly onto axial fan flanges. It provides effective acoustic attenuation and is especially useful for reducing cross talk in ventilation ductwork. With a spigot-style connection, it can be easily integrated into systems using flexible or spiral ducting. This silencer is well-suited for environments where extended sound control is needed without compromising airflow performance.