RSD355/400 : Helios Fans RSD 355/400
Helios / (RSD355/400)
| Code & Description | Price | |
|---|---|---|
|
RSD355/400 : Helios Fans RSD 355/400
Note: £263.53 + VAT for new customers using 'WELCNFAN1' discount code!
|
£310.03 + VAT £372.04 | |
We accept : 
15% discount with code ‘welcnfan1’
Note: Code can only be used once per customer. Discount codes are entered after selecting shipping method.
Need it today? We offer same day deliveries
Same day deliveries locally & nationwide (UK mainland only). Price on request — Send message with your order, or call 0161 864 1777.
The Helios Fans RSD 355/400 is a compact and efficient duct silencer engineered for use in ventilation systems where noise reduction is essential. Constructed from durable galvanized sheet steel, the silencer is internally lined with high-grade mineral wool to absorb sound effectively. The airflow side is protected with an abrasion-resistant fleece for enhanced durability.
Designed to match standard fan diameters (R 20), the silencer also includes pre-drilled mounting holes that conform to DIN 24155 specifications. With very low airflow resistance, the RSD 355/400 is an excellent choice for maintaining quiet and efficient air distribution in commercial or industrial HVAC installations.