STJH-RECTANGULAR-DUCT-SILENCER-400X200X1000

Rectangular Duct Silencer 400 x 200 x 1000 mm

A long, shallow attenuator for compact rectangular ventilation branches.

The shallow airway fits low-height branch duct routes.
Flanged ends provide a removable connection for duct servicing.

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Product Introduction

The welded galvanized casing contains sound-absorbing elements aligned with the air path. Its small rectangular connection and one-metre body suit branch noise treatment where the duct remains low in height.

Key Features

The shallow airway fits low-height branch duct routes.
Flanged ends provide a removable connection for duct servicing.

Technical Parameters

Nominal Duct Width	400 mm
Nominal Duct Height	200 mm
Casing Length	1000 mm
Casing Material	Galvanized steel sheet
Casing Joint	Welded construction
Absorber	Internal sound-absorbing media
End Connections	Rectangular flanges
Overall Flange Size	440 x 240 mm
Fixing Hole Diameter	9 mm
Customization	Available for the intended branch acoustics and installation space.

Applications

Small fan discharge branches
Low-height ducts approaching occupied rooms

Solutions for Your Application

Fan noise travels along a shallow branch duct.

Internal absorbing surfaces attenuate sound within the available rectangular airway.

An oversized attenuator requires abrupt transitions.

The nominal 400 x 200 mm connection fits the corresponding branch size.

Available Options

Acoustic media selection
Connection details

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