Further information for Helios Apparatebau SSD250/315/850 - Helios base attenuator 15dB Dämpfwert
SSD 25/3
5 socket suction muffler to reduce noise. Average attenuation is
5 dB. All metal parts made of galvanized sheet steel. For mounting on flat roofs. With hinged to fold down the Venti-lators for audit purposes. Foam core with a clear section enables access to Rohr-/Schachtsystem. Base plate with threaded sockets to DIN 24
55th Make: Helios No.: 5292 Type: SSD 25/3
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