Circular duct silencers - SIL

The silencers are delivered with the SPIRAL® system seals in the standard version. The diameter sizes d1 > 315 mm require ordering the NSL male couplings which need to be installed in the silencer before connecting the silencer to the ductwork. The male fittings are available separately. They are not delivered with the silencers. Glass wool thickness inside the silencer 50 mm for SIL50 depends on the outer cladding size. 100 mm for SIL100 depends on the outer cladding size. Insulation Insulation material glass wool. Insulation type trimmed from reel, flexible. Reaction to fire A1 acc. to EN 13162