CLA-A

Compact sound attenuator for circular ducts

Extremely low installation height
Very good sound attenuation
Air tightness class D
M1 class
Low pressure drop
Type-approved
Built for a low CO2 footprint "EPD"
Fire-resistance class EI30 to EI120*
*See the table for requisite safety distance

Calculate with your requirements

CLA is part of Swegon’s RE:3 concept based on the key principles of circularity, and which consists of RE:duce, RE:use and RE:vitalise. CLA is made with sustainable sheet metal called RRP, where RRP stands for “recycled and renewably produced”. The steel has a recycled steel content of at least 75 per cent. In addition, the manufacturing process uses electric arc furnaces that run on 100 per cent renewable energy.

Technical description

Design

Material and surface treatment

Made from recycled galvanised steel sheet for environmental class C3 (equivalent to M2 for AMA VVS2016)
Sound attenuating materials: 50 mm thick mineral wool, covered with special polyester fabric.
Fibre migration-secured thanks to our solution with self-supporting surface layer, approved with regard to cleaning, fibre migration, ageing resistance, emissions, etc.
The connection spigots are fitted with rubber seals

Adaptation

Installation, commissioning and maintenance

The connection spigots on this product are designed for connection to ducts only. It is important to drive screws or blind rivets into the sheet-metal edge on the connection spigot.

The product can be mounted by means of approved hangers that satisfy the provisions to load bearing capacity rating R corresponding to the fire resistance the structural element of the building, for example load bearing capacity rating R60 for elements of structure to fire-resistance class EI60.

Dimension	Length	Static integral attenuation, dB to ISO 7235
(mm)	(mm)	63	125	250	500	1K	2K	4K	8K
100	500	7	9	14	26	34	42	35	26
100	1000	7	17	26	44	50	50	50	39
125	500	5	9	13	21	29	35	31	20
125	1000	7	16	23	39	50	50	47	35
160	500	5	8	13	17	23	31	21	17
160	1000	7	13	22	32	45	50	38	25
200	500	5	8	11	15	20	22	14	14
200	1000	7	13	20	28	40	45	27	20
250	500	5	6	8	11	15	16	10	7
250	1000	6	11	15	20	28	31	18	14
315	500	4	6	7	9	12	8	8	5
315	1000	6	10	12	17	24	21	12	7
400	500	4	6	7	9	12	8	6	4
400	1000	5	9	12	16	23	14	8	6

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	Date
Transfer air solutions (pdf 970.08kB)	ALS, CLA-A, GRC, SOTTO	Brochure	06/11/2023
Environmental Product Declaration (pdf 809.51kB)	CLA-A (RE3)	Quality	23/08/2024
Environmental Product Declaration (pdf 789.79kB)	CLA-A	Quality	23/08/2024
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	08/04/2023

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.