The Helios MK 400 – 450 is a durable mounting bracket intended for fastening fan flange housings to roofs, walls, or floors. Manufactured from galvanized sheet steel, it provides excellent corrosion resistance and structural strength. The bracket features pre-drilled holes that perfectly align with the bolt holes on the ventilator flange, allowing for quick and accurate installation. Suitable for heavy-duty ventilation systems, the MK 400 – 450 ensures a stable and secure mounting solution for larger fan units