The Helios SSD 250/315 is designed for inlet-side sound insulation, offering an average noise reduction of 15 dB to improve acoustic comfort in ventilation systems. Constructed entirely from durable galvanized sheet steel, this unit is suitable for mounting on flat roofs.
A key feature is the folding hinge, which allows the fan to be easily folded down for inspection and maintenance without disassembling the system. The foam core is designed with a free cross-section, ensuring unhindered access to the casing and duct system for service operations.
For secure installation, the base plate is fitted with threaded bushes compliant with DIN 24155 standards, providing a reliable and standardized mounting solution. The SSD 250/315 is an efficient, practical solution for reducing noise at the fan inlet while maintaining ease of access.