The Helios Fans WDS 450 is a mounting base designed for installing roof fans and ventilation hoods on corrugated roofs, suitable for RD roof fans with an incline of up to 25°. It is constructed from glass fiber reinforced polyester, offering a lightweight yet highly durable and unbreakable structure. The material is both weatherproof and resistant to corrosion, with low thermal conductivity for efficient performance. The shaft spacing measures 177 mm (profile 5). The unit includes fastening screws, profile rubbers, and sealing material between the base and the base plate for a secure and tight installation.