The Helios Fans WDS 200 and WDS 225 are designed for mounting roof fans and ventilation hoods on corrugated roofs, compatible with RD roof fans featuring inclines up to 25°. Both models are constructed from weatherproof and corrosion-resistant glass fiber reinforced polyester, offering low weight and excellent durability. They feature low thermal conductivity and maintain a shaft spacing of 177 mm (profile 5). The package includes fastening screws, profile rubbers, and sealing materials between the base and base plate to ensure a secure and effective installation.