Acoustic Silencers-Rectangular

Description

Acoustic Rectangular Silencers for industrial noise control

Acoustic Rectangular Silencers are high-performance attenuation units engineered for industrial noise control. They are essential for ventilation systems, mechanical plant rooms, and acoustic enclosures, allowing vital airflow to pass in and out of a space while heavily damping airborne machinery noise.

Attenuation: The reduction in strength or volume of a sound wave as it passes through a acoustic medium.
Pressure Drop: The loss of air pressure caused by friction or resistance as air flows through the internal baffles of the silencer.

Key Engineering Features

Acoustically Lined Cells: Internal baffles filled with sound-absorbing materials to trap and attenuate noise as it travels through the unit.
Balanced Airflow Design: Silencers must be sized accurately to maintain proper machinery ventilation. Because internal baffles restrict the passage of air, units must be large enough to prevent unacceptable pressure drops while maintaining required airflow volume.

Customisable Accessories & Options

Mouths: Flanged inlets and outlets to seamlessly connect the silencer to industrial ducting or enclosure frameworks.
Anti-Bird Mesh: Heavy-duty wire screening to prevent birds and wildlife from nesting inside the open airflow channels.
Rain Hoods & Flat Rain Covers: Weather-proof caps that shield the vertical or horizontal face of the silencer from water ingress.
Swan-Neck Rain Covers: Curved, downward-facing duct attachments designed to block driving rain in exposed, harsh outdoor environments.

Modular Acoustic Rectangular Silencers for use with the AC80 enclosure system — Rectangular acoustic silencer for use with the AC80 enclosure system

Technical Specifications

Covers and fixtures	1.2mm e.galvanised sheet and perimeter frame made with a METU joint
Cells	0.8mm e.galvanised sheet with flat finishes at both ends
Absorbent	50kg/m³ mineral wool
Cell finishes	Protective black hood
Models	4 available
Cell width	150mm
Airflow channel width	50,75,100 and 150mm depending on model
Max. usage temp.	200°C

Acoustic Performance per Model

CAS-150
Freq, Hz	63	125	250	500	1k	2k	4k	8k
Length 1m	2	3	11	21	31	29	14	10
Length 2m	4	7	20	38	54	51	23	14

CAS-100
Freq, Hz	63	125	250	500	1k	2k	4k	8k
Length 1m	5	5	14	26	43	43	25	15
Length 2m	7	9	26	48	54	62	41	23

CAS-75
Freq, Hz	63	125	250	500	1k	2k	4k	8k
Length 1m	4	6	16	31	41	52	32	23
Length 2m	6	11	30	51	55	63	54	33

CAS-50
Freq, Hz	63	125	250	500	1k	2k	4k	8k
Length 1m	7	8	22	36	51	55	43	30
Length 2m	10	16	39	51	56	64	62	45

The insertion losses above are in duct, without flow, as per UNE-EN ISO 11691:2010. Please contact our technical department for flow rate pressure drop data.

View more examples in our Projects Section