SORDO-A

Sound attenuators for circular ducts

50 mm mineral wool
Air tightness class D
M1 classified
Built for a low CO2 footprint "EPD"
Excellent noise attenuation
Low pressure drop
Fire-resistance class EI30 to EI120*
** See the table for requisite safety distance*

Calculate with your requirements

SORDO-A 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. SORDO-A 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 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

Installation, commissioning and maintenance

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 R 60 for elements of structure to fire-resistance class EI60.

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.

Dimension	Length	Static integral attenuation, dB to ISO 7235
(mm)	(mm)	63	125	250	500	1K	2K	4K	8K
100	500	5	7	12	24	37	45	35	24
100	800	6	10	19	32	45	50	45	27
100	1100	7	12	26	40	50	50	50	38
125	500	3	6	10	21	30	37	32	17
125	800	4	9	16	30	40	50	38	25
125	1100	5	12	21	39	50	50	44	33
160	500	3	5	10	17	25	32	17	14
160	800	4	8	15	25	35	42	28	20
160	1100	5	11	20	33	46	50	39	25
200	500	3	3	8	13	18	22	13	12
200	800	3	5	11	20	30	35	20	17
200	1100	4	7	15	27	42	48	27	19
250	500	2	2	5	10	16	15	8	6
250	800	2	4	8	15	23	24	12	9
250	1100	3	6	11	20	31	34	17	11
315	500	1	3	4	7	10	7	6	2
315	800	1	4	7	12	17	14	8	4
315	1100	2	5	9	17	25	21	10	6
400	500	1	3	3	7	10	7	5	3
400	800	1	3	5	11	15	10	6	3
400	1100	2	4	7	15	20	13	7	3

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	Download
Environmental Product Declaration (pdf 808.17kB)	SORDO-A	Technical catalogue	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

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