Lack of space is a frequent problem in air treatment installations. This means that it is often difficult to find enough straight lengths to install a straight silencer.

This problem can be eliminated by installing a curved silencer.

For the same length, it mostly has better attenuation than the equivalent straight silencer. In particular, you get better attenuation at high frequencies (4 and 8 kHz).

Fire classes without protective distance: EI 60, E 120

Fire classes with protective distance to:
(According to Swedish regulations)

evacuation person:

3 kW/m² EI 120 at distance 50 mm

combustible materials:

10 kW/m² EI 120 at distance 5 mm
30 kW/m² EI 120 at distance 5 mm

Insulation thickness 100 mm.

Fulfils tightness class D.
Tested according ti ISO 7235.

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