LFIV

Angled duct silencer LFIV is designed for sound attenuation of fan noise in ventilation ducts. LFIV conforms to all requirements according to the current building regulations in terms of cleanability, fibre proofing, emissions, and microorganisms.

LFIV is manufactured in three attenuation classes (type 1, 3 and 5), where type 1 has the best attenuation. It is designed with a varying number of baffles, whose inlet and outlet sides are equipped with angled profiles to limit the pressure drop. The absorption material has a type-approved surface layer that is cleanable and fibre-proof. If necessary, LFIV can be fitted with an inspection hatch, uninsulated or insulated design (specified in plain text when ordering).

The silencer is installed irrespective of the air direction. As standard it comes with slip-clamp connections, but can also be supplied with flange connections (specified in plain text when ordering).

For larger sizes and long internal angular legs or restricted transport openings, the silencer is delivered in sections that are easily assembled on site. The silencer can also be supplied in different dimensions on the inlet and outlet.

• Sizes from width 300 mm to 2000 mm and height from 300 mm to 2000 mm
• Three standard types in 3 different lengths
• Indented connection for low pressure drop
• Type approved cleanable Protec surface layer
• Can be manufactured in many special versions
• Available with an inspection hatch