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
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.

Read more about CLA RE:3 here.

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.

Specification text

Example

Swegon type CLA-A compact sound attenuators for connection to circular ducts, with the following functions:

Type-approved
Made with RRP galvanised steel sheet corresponding to environmental class C3 (equivalent to M2 according to AMA VVS2016) with a low CO2 footprint.
Fire-resistance class EI30/EI60/EI120 with safety distance
Air tightness class D
M1 class

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

Listed in Nordic Ecolabelling Portal

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	Product	Document type
Transfer air solutions (pdf 970.08kB)	ALS, CLA-A, GRC, SOTTO	Brochure
Bundle Solution CLA-A and REACT V (pdf 1.51MB)	CLA-A, REACT V	Brochure
Environmental Product Declaration (pdf 789.79kB)	CLA-A	Quality
M1 Certificate (pdf 167.9kB)	CLA-A; SORDO-A	Quality
Building product declaration (pdf 50.23kB)	CLA-A	Quality
Compact sound attenuator for circular ducts (pdf 293.27kB)	CLA-A	Technical catalogue
Installation, Maintenance (pdf 239.05kB)	CLA-A; CLA-B	IOM Manual
Acoustics Overview (eng) (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
Environmental Product Declaration (pdf 809.51kB)	CLA-A (RE3)	Quality

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