Sound Attenuators
Duct Silencer
Sound Attenuators are in-duct silencers that reduce fan and airflow noise transmitted through HVAC ductwork.
Rectangular splitter units are built from galvanized steel with mineral fibre splitter infill, and are available in straight or 90° bend configurations to suit tight plant room layouts.
Features
Reduces fan and airborne duct noise
Galvanized steel construction
Mineral fibre splitter infill behind perforated steel
Aerodynamic fairings reduce pressure loss by up to 25%
90° bend type available for compact plant rooms
Optional moisture and grease resistant lining
Applications
Air handling units, fan rooms, plant rooms, hospitals, hotels, offices, cleanrooms, and any HVAC system serving noise-sensitive occupied spaces.
Specifications
Casing | Lock-formed pre-galvanized steel sheet |
|---|---|
Splitter Infill | 48 kg/m³ mineral wool, 100 mm slab |
Perforated Facing | 0.7 mm galvanized perforated steel |
Standard Height | 300 – 1500 mm (inside duct) |
Standard Length | 600 – 2400 mm in 300 mm increments |
Duct Pressure | 1000 – 3000 Pa (welded casing) |
Types | Straight splitter (RSA) / 90° bend (RSB) |
Optional Lining | Melinex lining for hospitals and grease-laden conditions |
Test Standard | BS 4718 |