The Helios Fans WSG 710 is a wall grille engineered to protect intake and exhaust air openings from rain, snow, and animal intrusion. It is compatible with both rectangular and round duct entries, providing versatile installation options. Constructed from durable extruded aluminium profiles with a natural anodised finish, this grille offers long-lasting strength and corrosion resistance. Fixed louvres spaced 65 mm apart ensure efficient airflow, while a galvanised sheet steel mesh grill with a 16 mm mesh width positioned behind the louvres adds an extra layer of protection without reducing ventilation effectiveness.