Silencers

Note!

Note!

Note!

Alnor reserves the right to errors and mistakes in the website content. The presented information is not to be considered commercial offer as understood under Art. 66 and following of the Civil Code. Please contact your closest Sales Department to confirm the availability and current pricing.

National declaration of performance no. 028/01/22

National declaration of performance no. 028/01/22

National declaration of performance no. 028/01/22


Manufacturer: ALNOR Systemy Wentylacji Sp. z o.o.

Designation of construction product type:  

Silencers made of galvanized steel: SLC, SRC, SPC.
Silencers made of corrosion-resistant steel: SLK, SRK, SPK, SLM, SRM, SPM.
Silencers made of aluminium: SLA, SRA, SPA.

Intended use(s): Intended to be used for noise suppression in ventilation and air conditioning systems, in residential buildings, collective residence and public utility buildings.

Polish product standard: PN-EN ISO 7235:2009

National declaration of performance no. 030/02/24

National declaration of performance no. 030/02/24

National declaration of performance no. 030/02/24


Manufacturer: ALNOR Systemy Wentylacji Sp. z o.o.

Designation of construction product type:  

Silencers made of galvanized steel: SIL, SIRL, SIBL, SIBRL, SIBOL, SIBROL, BSIL.
Silencers made of corrosion-resistant steel: SIL-K, SIRL-K, SIBL-K, SIBRL-K, SIBOL-K, SIBROL-K, BSIL-K.
Silencers made of aluminium: SIL-A, SIRL-A, SIBL-A, SIBRL-A, SIBOL-A, SIBROL-A, BSIL-A.

Intended use(s): Intended to be used for noise suppression in ventilation and air conditioning systems, in residential buildings, collective residence and public utility buildings.

Polish product standard: PN-EN ISO 7235:2009, PN-EN 12237:2005, PN-EN 15727:2010, PN-EN 13501-1:2019

National declaration of performance no. 036/01/22

National declaration of performance no. 036/01/22

National declaration of performance no. 036/01/22


Manufacturer: ALNOR Systemy Wentylacji Sp. z o.o.

Designation of construction product type:  

Flexible silencer SLEFD, SLEAL, SLEFL, SLESD, SLEAF, SLEFL-P, SLEST with nominal diameters: 80 - 315 mm.

Intended use(s): Intended to be used for noise suppression in ventilation and air conditioning systems, in residential buildings, collective residence and public utility buildings.

Polish product standard: PN-EN ISO 7235:2009

National declaration of performance no. 038/01/22

National declaration of performance no. 038/01/22

National declaration of performance no. 038/01/22


Manufacturer: ALNOR Systemy Wentylacji Sp. z o.o.

Designation of construction product type:  

Silencers made of galvanized steel: SQLL-25, SQLL-50, SQQL-30, SQQL-B-30.
Silencers made of corrosion-resistant steel: SQLL-25-K(-316L), SQLL-50-K(-316L), SQQL-30-K(-316L), SQQL-B-30-K(-316L).
Silencers made of aluminium: SQLL-25-A, SQLL-50-A, SQQL-30-A, SQQL-B-30-A.

Intended use(s): Intended to be used for noise suppression in ventilation and air conditioning systems, in residential buildings, collective residence and public utility buildings.

Polish product standard: PN-EN ISO 7235:2009

TÜV Rheinland Monitoring + Testing  -  Round and Rectangular  Sound Attenuators

TÜV Rheinland Monitoring + Testing - Round and Rectangular Sound Attenuators

TÜV Rheinland Monitoring + Testing - Round and Rectangular Sound Attenuators


Certification body: TÜV Rheinland Group

Reference documents: EN 1506:2007 and EN 12237:2005

Application: Designed for use in ventilation systems in apartment buildings, industrial plants and public utility objects including hospitals.

Products: Circular and rectangular silencers (sound attenuators)

Test report - Rectangular Sound Attenuators

Test report - Rectangular Sound Attenuators

Test report - Rectangular Sound Attenuators


Certification body: Fraunhofer Institute for Building Physics IBP

Test: Insertion loss, sound power level and pressure loss measurements on the splitter silencers

Reference document: DIN EN ISO 7235

Products: SLC Rectangular sound attenuators

Hygienic certificate - Round and Rectangular Sound Attenuators

Hygienic certificate - Round and Rectangular Sound Attenuators

Hygienic certificate - Round and Rectangular Sound Attenuators


Hygienic Certificate No: BK/K/0187/01/2019 valid till 2024-07-19

Certification body: National Institute of Public Health - National Institute of Hygiene

Application: Designed for use in ventilation systems in apartment buildings, public utility objects, hospitals and industrial plants

Products CODE:  Round and rectangular silencers (attenuators), i.e. SIL, SIBL, SIBOL, SIRL, SIBROL, SIL-GL, SQLL-25, SQLL-50, SQLL-CR/CRQ, SQQL-30/B-30, BSIL, SLC, SRC, SPC

Hygienic certificate - flexible silencers

Hygienic certificate - flexible silencers

Hygienic certificate - flexible silencers


Hygienic Certificate Number: B-BK-60212-0018-21 valid till 2026-03-19

Certification body: National Institute of Public Health - National Institute of Hygiene

Application: Designed for use in ventilation and air-conditioning systems in apartment buildings, industrial plants, and public utility objects including hospitals.

Products: Flexible sound attenuators SLEFL, SLEFL-P, SLEAL, SLESD, SLEAF, SLEFD and SLEST

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Alnor Systemy Wentylacji
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05-552 Wola Mrokowska

tel. +48 22 737 40 00