The Helios MB-WK 315/355/400/EC355/EC400 is a robust wall mounting bracket designed for use with larger Helios Megabox fan models. Constructed from durable galvanized sheet steel, it provides long-lasting support and corrosion resistance, ensuring safe and stable installation. This bracket is suitable for Megabox units in sizes 315, 355, 400, as well as EC355 and EC400 models, making it an ideal mounting solution for demanding commercial and industrial ventilation systems.