Why does the silencer need to be extended during installation?

The factory silencer is supplied compressed (e.g. 0.55 m instead of 1.2 m) for more convenient transportation. By fully extending it, the perforated surface inside achieves its optimal structure, which maximally absorbs low and mid-frequency sounds.

Is AKU-COMP A suitable for rooms with high fire safety requirements?

Yes, this A series modification with reinforced aluminum foil meets the strict A1 non-combustible material requirements (according to the EN 13501-1 standard), making it perfectly suitable for commercial and public buildings.

Which insulation thickness should I choose: 25 mm or 50 mm?

50 mm insulation provides even more effective sound attenuation, especially at the lowest frequencies, as well as better thermal resistance. If space allows and the system is more powerful, it is recommended to choose the 50 mm variant.

AKU-COMP A Lankstus Izoliuotas Triukšmo Slopintuvas

A1 fire class flexible insulated silencer

Ensure quiet operation of your ventilation system with the fire-resistant AKU-COMP A silencer. Made of a flexible perforated duct and 25-50 mm mineral wool, covered with durable reinforced aluminum foil meeting A1 fire class. Ideal for reliable connections between the unit and ducts, excellently attenuating low-frequency noise.

€40.91

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100 mm 125 mm 160 mm 200 mm 250 mm 315 mm 80 mm

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1200 mm 600 mm

Izoliacijos storis

25 mm

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Why choose the AKU-COMP A silencer?

This flexible silencer guarantees not only effective sound absorption in the low-frequency range but also high fire safety. The metal sleeves at the ends ensure a highly reliable and tight connection with the ducts, while the flexible structure allows for easy installation even in tight spaces.

Applications

AKU-COMP A is specifically designed for use where higher fire safety requirements apply. The outer layer is covered with reinforced aluminum foil meeting the requirements for non-combustible materials (Euro class A1 according to EN 13501-1). It withstands pressures from 0 to 1000 Pa and a working temperature of +80 C, making it suitable for both residential and commercial ventilation systems.

Duct system components

The silencer is usually installed between the ventilation unit (AHU) and the main ductwork or distribution box. To complete the system, you will also need mounting clamps, sealing tapes, and main ventilation ducts. ORO Haus specialists are always ready to help you choose compatible components.

AKU-COMP A technical specifications

Main material properties and operational characteristics ensuring durability and safety.

Key specifications
Parameter	⌀100	⌀125	⌀160	⌀200
Inner duct type	Flexible perforated Compact aluminum duct (0.12 mm)	Flexible perforated Compact aluminum duct (0.12 mm)	Flexible perforated Compact aluminum duct (0.12 mm)	Flexible perforated Compact aluminum duct (0.12 mm)
Outer cover	Reinforced aluminum foil (Type A)	Reinforced aluminum foil (Type A)	Reinforced aluminum foil (Type A)	Reinforced aluminum foil (Type A)
Insulation	Yes -- 25 mm or 50 mm mineral wool	Yes -- 25 mm or 50 mm mineral wool	Yes -- 25 mm or 50 mm mineral wool	Yes -- 25 mm or 50 mm mineral wool
Fire class	A1 (non-combustible, per EN 13501-1)	A1 (non-combustible, per EN 13501-1)	A1 (non-combustible, per EN 13501-1)	A1 (non-combustible, per EN 13501-1)
Max. operating temperature	+80 C	+80 C	+80 C	+80 C
Pressure range	0 - 1000 Pa	0 - 1000 Pa	0 - 1000 Pa	0 - 1000 Pa

Dimensions by diameter

Silencers are supplied in a compressed form and must be extended to their nominal specified length (0.6 m or 1.2 m) during installation to achieve maximum sound attenuation.

Dimensions by diameter
Parameter	⌀100	⌀125	⌀160	⌀200
Connection	Sleeve / Sleeve	Sleeve / Sleeve	Sleeve / Sleeve	Sleeve / Sleeve
Compressed length (for 0.6m model)	0.28 m	0.28 m	0.28 m	0.28 m
Compressed length (for 1.2m model)	0.55 m	0.55 m	0.55 m	0.55 m

Installing the silencer is fast and requires no special tools, but it is important to follow a few essential rules to ensure system tightness and maximum sound attenuation efficiency.

Extending the silencer

To achieve the maximum sound attenuation effect, the silencer must be extended to its full nominal length during installation (e.g., a compressed 0.55 m section must be extended to 1.2 m). An unextended silencer loses part of its acoustic properties.

Connecting to the system

The metal sleeves at both ends easily slide into standard galvanized steel ducts or AHU spigots. It is recommended to mechanically secure the connection with self-tapping screws or special rivets.

Sealing

Although the sleeves provide a good initial connection, it is always recommended to further insulate and seal the joint using high-quality temperature-resistant aluminum tape.

Routing and fixing

The silencer is flexible, but try to avoid sharp angles or kinks, as this increases air resistance. Use appropriately sized duct clamps with rubber linings to prevent the transmission of vibrations to the building structure.

Assemble your ductwork system

Find compatible ducts, sealing materials, brackets, and distribution boxes for your ventilation system.

Frequently Asked Questions

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