The Elta 068‑0315-2DENP is a silencer with a diameter of 315mm and length of 2D, engineered for direct mounting to axial fan flanges. It delivers effective noise attenuation and helps prevent cross talk within ventilation ductwork. This silencer’s extended length improves sound control, and it is designed to work seamlessly with flexible or spiral ducting, offering a practical solution for improving acoustic performance in ducted fan systems.