The Helios FRS-WDV 2−75÷100 is a Flexpipe wall mounting set designed for connecting supply or exhaust air valves with a DN 100 or DN 125 connection (valves available separately). It features a pipe socket for direct valve integration and includes two connection ports for NW 75 ducting. Constructed from galvanized sheet steel, the unit ensures reliable, corrosion-resistant performance in ventilation systems.