CLA-A

CLA-A is a compact sound attenuator for circular ducts

Extremely low installation height.
Very good sound attenuation
Fibre-migration proof
Air tightness class D
M1 classified
Availabe with recycled steel RE:3, "EPD"
Low pressure drop
Mineral wool
Galvanised sheet steel to Environmental Class C3
Fire-resistance class EI30 to EI120*
*See the table for requisite safety distance

Calculate with your requirements

CLA-A is compact sound attenuator for circular ducts
Industrially fabricated product designed for excellent sound attenuation, highest quality and ease of installation.
Patented fiber-migration proof surface.

CLA-A is available in a RE:3 version. A RE:3 product is an alternative to our conventional products, systems and services, an alternative which is reduced, reused or revitalised. We ensure a notably lower level of embodied carbon, built-in CO2, and let these solutions wear our RE:3 symbol. Read more about CLA RE:3 here.

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Include Accessory documents

Document	Article	Document type	Date
Building product declaration (pdf 50.23kB)	CLA-A	Quality	5/24/2018
Environmental Product Declaration (pdf 380.15kB)	CLA-A	Quality	11/7/2023
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	4/8/2023
Type approval (pdf 180.23kB)	CLA-A, CLA-B	Quality	10/21/2021
Installation, Maintenance (pdf 239.05kB)	CLA-A; CLA-B	IOM Manual	1/15/2024
M1 Certificate (pdf 167.9kB)	CLA-A; SORDO-A	Quality	5/12/2023
Approval 2706/92, Duct insulation (pdf 276.09kB)	ISOVER Cleantec PLUS	Quality	9/8/2022
Compact sound attenuator for circular ducts (pdf 293.27kB)	CLA-A	Technical catalogue	1/15/2024

CLA-A - Standard range
Dimension	Length	Working range	Attenuation
in	in	CFM	dB(A)
4-16	20-39	0-4250	5-25