The Helios DDF 400 is a roof-mounted fitting designed for both air intake and exhaust applications, or for connecting standard-diameter ventilation ducts. Its broad, encircling rolled lead flashing enables seamless adaptation to various tile styles and saddle roof configurations. The unit includes a support plate and all structural components made from galvanized sheet steel to ensure long-term durability and secure installation. The protective hood is finished in a brick-red color for an aesthetically pleasing roof integration.