Round and rectangular formats
Match the opening to the duct or fan connection; the listed straight units share a length but have different passage areas and space requirements.
PRODUCT / TECHNICAL DATA Cleanroom Ductwork & AccessoriesSpecifications / Configurations / Procurement
PRODUCT GALLERYST
Product view
Cleanroom Ductwork & Accessories
Duct Silencer
Product specifications
| Brand | ST |
|---|---|
| Product type | Duct silencer / sound attenuator |
| Function | Reduction of fan and ventilation noise transmitted through ductwork |
| Shapes | Circular, square and rectangular |
| Material options | Galvanized steel or stainless steel |
| Inner construction | Perforated metal lining |
| Connections shown | Flanged round and rectangular openings |
| Associated equipment | Axial fans, centrifugal fans and ducted equipment ventilation |
| System applications | Ventilation, exhaust and smoke-exhaust ductwork |
| Customisation | Dimensions, material, shape and silencer bends |
Customization availableSpecifications can be customized to your requirements.
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Specify the quantity and configuration in your inquiry.
Duct Silencer reduces fan noise transmitted along ventilation or exhaust ductwork. Its perforated inner lining exposes the sound to acoustic treatment while keeping an open air passage, reducing the duct-borne noise reaching occupied rooms or outlets.
Round, square and rectangular connections fit different duct sections. Custom silencer bends combine attenuation with a change of direction where a straight unit cannot fit.
MODELS AND DIMENSIONS
Galvanized steel size options
| Shape | Dimensions (mm) |
|---|---|
| Round | Ø200 × 1000 |
| Round | Ø250 × 1000 |
| Round | Ø300 × 1000 |
| Round | Ø350 × 1000 |
| Round | Ø400 × 1000 |
| Round | Ø450 × 1000 |
| Round | Ø500 × 1000 |
| Round | Ø550 × 1000 |
| Round | Ø600 × 1000 |
| Square | 200 × 200 × 1000 |
| Square | 250 × 250 × 1000 |
| Square | 300 × 300 × 1000 |
| Square | 350 × 350 × 1000 |
| Square | 400 × 400 × 1000 |
| Square | 450 × 450 × 1000 |
| Square | 500 × 500 × 1000 |
| Rectangular | 400 × 200 × 1000 |
| Rectangular | 600 × 200 × 1000 |
| Rectangular | 800 × 200 × 1000 |
| Rectangular | 1000 × 400 × 1000 |
Other sizes, stainless steel versions and silencer bends can be customised.
MODEL DIFFERENCES
Which configuration fits the task
Straight unit or acoustic bend
A straight unit needs clear length along the duct, while a bend uses a turn in the route. Select the acoustic arrangement against noise frequency, airflow and available pressure.
DUCT NOISE CONTROL
Treat sound along the ventilation path
Perforated inner lining
The perforations expose sound to the acoustic treatment along the passage while retaining a metal inner surface.
Round and rectangular connections
Choose a shape that fits the duct or fan connection, making it easier to include attenuation in the planned route.
Custom silencer bends
A silencer bend can combine a change of direction with acoustic treatment where the route cannot accommodate a straight section.
APPLICATION ENVIRONMENTS
Limit ventilation noise reaching occupied areas
Offices and hotels
Reduce duct-borne fan noise reaching work areas and guest rooms where ventilation operates during work or rest.
Shopping centres and sports halls
Add attenuation to large ventilation routes to reduce background noise from the air system.
Hospitals and laboratories
Treat ventilation noise entering patient and work areas, with the lining and material selected for the room's hygiene needs.
Workshops and machine equipment
Connect to ducted equipment or fan systems to reduce the noise carried through their ventilation and extraction routes.
Clean production workshops
Reduce fan noise in supply or exhaust ducts using a construction matched to the system's cleanliness and cleaning requirements.
Mine ventilation
Provide fan-noise attenuation in mine ventilation routes with a construction selected for the specified operating conditions.
ACOUSTIC SELECTION
Balance noise reduction with airflow requirements
Noise frequency and airflow
Select the acoustic design for the fan's noise spectrum and airflow, considering sound reduction, pressure loss and noise generated by air passing through the silencer.
Duct route and installation space
Match the opening and length to the duct layout; use a custom bend where a straight silencer will not fit.
System operating conditions
Match the casing and lining to temperature, moisture and cleaning needs, including the specified duty for mine or smoke-exhaust systems.
PROCUREMENT / INQUIRY
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