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LARGO

Angled sound attenuator with recessed connection for rectangular ducts

Very compact rectangular attenuator
Excellent aerodynamic characteristics
Very low pressure drop – splitters function as guide vanes
Environmentally friendly acoustic material, approved by independent test institute: ISOVER Cleantec^® PLUS
Washable surface layer ISOVER Cleantec^® PLUS.
Can be supplied with inspection hatch
Fire protected version with 50 mm mineral wool also available
Connection dimensions from 400x300 mm to 2000x2000 mm
Included in the MagiCAD database

Calculate with your requirements

LARGO is, due to its unique design with connection facing the side splitters, suitable for use both in ducts and in direct connection to the air handling unit. A low pressure drop is obtained as the baffle elements also serve as guide vanes for deflecting the air flow.

Technical Description

Design

Material and surface treatment

The LARGO is made as standard of galvanized sheet steel to Corrosivity class C3 (VVS-AMA 2019 Standard). The ISOVER Cleantec^® PLUS sound attenuating material has been granted type approval. (Type approval no. 2706/92 with regard to cleaning, fibre entrainment, resistance to ageing emissions, washable surfaces, etc. The standard LARGO is supplied with slip clamp connections.

Installation, commissioning and maintenance

LARGO T1

Uninsulated cleaning cover

LARGO T2

Fire-resistant insulated cleaning cover

LARGO T3

The sound attenuator is supplied insulated with 50 mm thick fire-resistant stone wool.

LARGO T4

The sound attenuator is supplied insulated with 50 mm thick fire-resistant stone wool.

LARGO T5

Flange connections

LARGO T6

Euroflange

Nordic Swan listed

The product is listed in the database for building products that can be used in Nordic Swan Ecolabelled buildings.

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Include Accessory documents

Document	Article	Document type
Approval 2706/92, Duct insulation (pdf 276.09kB)	ISOVER Cleantec PLUS	Quality
Building product declaration (pdf 178.63kB)	LARGO	Quality
Installation, maintenance (pdf 72.95kB)	MORENDO, CALMO, CADENZA, LARGO, LENTO	IOM Manual
Angle sound attenuator with recessed connection for rectangular ducts (pdf 561.32kB)	LARGO	Technical catalogue
Installation instruction (pdf 366.78kB)	Slip-clamp and Euroflange	IOM Manual
Acoustics Overview (pdf 2.43MB)	CLA-A, CLA-B, SORDO-A, SORDO-B, SORDO-C, SORDO-P, SORDO-PF, CALMO, CADENZA, LARGO, LENTO, MORENDO, FACILE, ALD, CTM, CTK	Brochure
Installation, maintenance (pdf 72.24kB)	MORENDO, CALMO, CADENZA, LARGO, LENTO	IOM Manual
Approval 2706/92, Duct insulation (pdf 276.09kB)	ISOVER Cleantec PLUS	Quality
Acoustics Overview (pdf 2.43MB)	CLA-A, CLA-B, SORDO-A, SORDO-B, SORDO-C, SORDO-P, SORDO-PF, CALMO, CADENZA, LARGO, LENTO, MORENDO, FACILE, ALD, CTM, CTK	Brochure
Angle sound attenuator with recessed connection for rectangular ducts (pdf 561.32kB)	LARGO	Technical catalogue

Whilst we have made every effort to ensure information on this website is up to date and accurate, the technical specification and availability of products/services listed on this website may vary market to market and are subject to change without notice. Please contact your regional representative or visit your local website for further details.

LARGO - Standard range
Measurement (mm)			Working range	Attenuation
M	A	I+U	m³/s	dB(A)
400-2000	300-2000	300-900	0-17	20-40