Can-Fan Silencer 160mm 45cm

A 45 cm silencer with 160 mm connecting flanges, in galvanised sheet steel with a mineral wool filling.

The 160 mm size is the standard in domestic and commercial building ventilation, which often makes this the part you need when extraction is joined to existing ducting in a house.

Two silencers rather than one

Most installations get one, behind the fan. Anyone who wants it genuinely quiet fits one on each side of the fan.

That sounds excessive and is not, because a fan radiates both ways. Noise entering the duct on the intake side ends up in the very room you were trying to keep calm. If your extraction sits in a growing space inside a house, that is often the side that bothers you, while all the attention goes to the discharge side.

Putting the fan acoustically between two silencers separates it from both sides of the system. Do work out what that costs in duct length and resistance, though, since you are adding 90 cm of silencer.

Connecting

The flanges are firmly fixed to the casing with screws and rivets, so the coupling can carry the silencer's weight without pulling on the seam.

Couple it with clamps to compatible 160 mm parts and do not let the silencer hang from ducting alone: steel with a filling inside weighs noticeably more than a length of flexible hose.

Technical Specifications:

• Flange size: 160 mm
• Length: 45 cm
• Casing: galvanised sheet steel
• Filling: mineral wool
• Placement: on one or both sides of the fan
• Construction: flanges fixed with screws and rivets

Frequently asked questions

Is fitting two worthwhile?
Yes, if you also want to stop noise on the intake side. That is often the side you hear in the room itself.

Why 160 mm rather than 150?
160 mm is the common size in building ventilation. Connect at the size your ducting already is.

Should I support it separately?
Sensible, yes. Do not let the weight hang from flexible ducting.

Do I lose airflow with this?
Every addition to the duct adds some resistance. With two silencers that counts twice.