The Helios Fans WSG 60/35 is a wall grille designed to protect intake and exhaust air openings by preventing rain, snow, and animals from entering. Sized to fit Helios duct fans, it is inserted into the duct’s cross-sectional area for secure installation. Constructed from extruded aluminium with a natural anodised finish, the grille ensures strength and corrosion resistance. Fixed louvres spaced at 65 mm intervals direct airflow efficiently, while a galvanised sheet steel mesh grill with a 16 mm mesh width is positioned behind the louvres to provide added protection without restricting ventilation.