Rectangular Duct Silencer

Rectangular Duct Silencer - for Rectangular Ducting

Rectangular sound attenuators (duct silencers) are intended for sound attenuation in ventilation and air conditioning systems. More often than not they are mounted between the fan and the air supply duct or air exhaust duct and before the air diffusers

Rectangular attenuator construction

The attenuator in the rectangular casing consists of housing and internal attenuating baffles. The housing is made of galvanized steel sheet and has frames at the ends made of sheet metal flange profiles. The baffle is rounded on one side and consists of a frame made of galvanised steel sheet and a sound-absorbing insert that absorbs the acoustic energy.

The sound-absorbing insert constitutes a combination of non-flammable mineral wool boards. Its external surface is covered with a special abrasion-resistant fabric that protects the mineral wool.

The mineral wool boards are covered with black glass fibre veil, the surface of which is adapted to the airflow with the speed of 20 m/s. The maximum temperature of the thermal energy carrier is 250°C. The product is non-flammable.

Silencing baffles (Sound attenuation splitters)

In terms of the design, we distinguish three types of attenuating baffles:

L - absorption baffles,
R – absorption-resonator baffles
P – absorption-resonator baffles, perforated

SLC, SRC and SPC rectangular silencers are mounted in ventilation runs with the vertically positioned baffles. In our offer except for ready rectangular attenuator, we also sell attenuating baffles separately.

Rectangular Duct Silencer - Products range

Miniature picture	Product code	Name of product	Files to download
	SLC	Rectangular silencers The SLC and SRC rectangular acoustic duct silencers are intended for sound attenuation in ventilation and air conditioning systems. More often than not they are mounted between the fan and the air supply duct or air exhaust duct and before the air diffusers The acoustic silencer consists of the housing and internal baffles. The housing is made of galvanised steel sheet and has frames at the ends made of sheet metal profiles. The baffle is rounded on one side and consists of the frame made of galvanised steel sheet and sound-absorbing insert that absorbs the acoustic energy. The sound-absorbing insert constitutes a combination of non-flammable mineral wool boards. Its external surface is covered with a special abrasion-resistant fabric that protects the mineral wool. The mineral wool boards are covered with black glass fibre veil, the surface of which is adapted to the air flow with the speed of 20 m/s. The maximum temperature of the thermal energy carrier is 250°C. The product is non-flammable. With bigger sizes - a or b - the baffles are carried out as combined. In terms of the design, we distinguish three types of baffles: L - absorption baffles, R – absorption-resonator baffles P – absorption-resonator baffles, perforated Distance s between the baffles is 40 - 100 mm. SLC, SRC and SPC rectangular silencers are mounted in ventilation runs with the vertically positioned baffles.	Rectangular silencers
	K-SLC / K-SRC / K-SPC	Baffles for ventilation rectangular silencers The K-SLC / K-SRC / K-SPC baffles are an internal assembly for rectangular ventilation ducts - thus creating an acoustic duct silencer. Mounted according to the SLC silencers, they have identical acoustic properties. The baffles can be assembled during the assembly of the whole system - they are one of the ducts. Owing to this, the Baffle is inserted into the duct plane. K-SLC - the solid absorption baffle is made of mineral wool with N3 black glass fiber veil. The whole baffle is open with the frame made of galvanized sheet. On request, acoustic baffles can be consumed: - with the washable glass fiber veil - with the frame made of aluminum sheet, acid resistant sheet (various grades), copper sheet - possibility of manufacturing other than the default ones - from 40 to 100 kg / m3 provided at the acoustic parameters can change. The K-SLC-P half baffle - is a black glass fiber veil and the oval shape is slanted to the side of the ventilation duct. K-SRC -absorption-resonator baffle has half of its plane covered with a metal sheet. K-SLC baffles. K-SLC baffles. It is mounted to ventilation ducts by means of acoustic duct silencer. K-SPC - the absorption-resonator baffle perforated on the air with the air permeability 36% in the case of the half baffle. K-SLC baffles - creating an acoustic silencer with the rectangular ventilation duct.	Baffles for ventilation rectangular silencers

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Rectangular Duct Silencer