The Helios Fans WSG 200 is a wall-mounted grille designed to cover air intake and exhaust openings, preventing the entry of rain, snow, and small animals. It is compatible with both rectangular and round duct connections, offering versatile installation options. The grille is built from extruded aluminium profiles with a natural anodised finish, ensuring structural strength and corrosion resistance. It features fixed louvres spaced at 65 mm and includes a rear mesh grille made from galvanised sheet steel with a 16 mm mesh width for added protection and airflow reliability.