The Elta SWC45/50 wall cowl safeguards fan openings from adverse weather conditions while minimizing resistance to airflow. It is manufactured from glass-reinforced polyester (GRP) with a goose wing grey colour permanently impregnated into the gel coat for long-lasting durability. The cowl is equipped with an integral galvanised mesh bird screen to prevent bird ingress. Suitable for 450mm and 500mm fan openings, this accessory ensures reliable protection and efficient ventilation performance.