• Model:SLU-300

Circular Inline Silencers - 0.3M long - SLU-300

£ 38.85 (excl. VAT)

£ 46.62 (inc. VAT)

Inline Circular Attenuators in standard diameters from 100mm to 400mm diameter. Attenuators are available in standard 300mm, 600mm, 900mm and 1200mm lengths.
This version is 300mm long
The longer the unit, the more effective it is.

Attenuator construction for this range comprises a pre-galvanised sheet steel spiral wound outer casing, manufactured in accordance with HVCA DW144 specification, with circular spigoted end caps. The inner bore is manufactured from pre-galvanised and perforated spiral wound steel tube, retaining a 50mm thick scrim faced 45 kg/cu.m acoustic media.

This range of circular attenuators offer minimal resistance to airflow and can be used in a variety of noise control applications:-
• Small fan system attenuation
• Cross-talk attenuation
• System noise regeneration attenuation
• System terminal unit attenuation

PDF Files


Silencer Range


Range Spec sheet

Available Options

1 x Female Ducting Connector - 450mm2 x Anti Vibration Duct Suspension Rings - 150mm1 x HCBT-4/500-H - Three Phase 400v Only - 56033228001 x Transformer speed controller - ATC1 - 16.0 Amps1 x Transformer Speed Control - RTRE- 12.0Amp1 x 220x90mm Flat Channel Connector1 x Isolator Switch - ISOSW1 x HRB/4-500-35-BPNC2 x Duct Suspension Rings - 150mm1 x Transformer 5 Speed Controller - ATC1-10TK1 x Euro Series - Plate Axial - ESP500141 x Ducting 45 Degree Bend - 125mm1 x Transformer speed controller - ATC1 - 10.0 Amps1 x HCFT/4-5001 x Vent Axia W300310 Controller Electronic 1.5A1 x Helios HQW-500/6 - IP551 x Vent Axia T-Series Controller1 x AL 500 D2 01 AXIALINE - High Performance Long Cased Axial Fan1 x HRB/6-500-25-APN1 x 110 x 54mm Equal Horizontal T-Piece1 x Transformer Speed Control - RTRE- 7.0Amp1 x Duct Fast Clamps - 150mm1 x Spigot plate - 150mm1 x Spiral Ducting 3 Meters - 100mm1 x Duct Termination with Mesh - 150mm1 x HCF - Ceiling Fan 1200mm (48 inch)1 x Ducting 45 Degree Bend - 150mm1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x Duct Mounted Filter Box - G4 Grade Panel - 100mm1 x Ducting 45 Degree Bend - 100mm1 x Male Ducting Connector - 150mm1 x Flanged Spigot - 150mm1 x Spiral end cap - 150mm1 x Ancillary Sealing Band - 150mm1 x MTP 10, 10K, Speed control1 x Flanged Spigot - 180mm1 x Ancillary Pack for SLC-3551 x HQS Bathroom Axial Flow Fan - 125mm1 x Ancillary Pack for SLC-3151 x FlameProof Plate Axial Fan - Single Phase - 15 inches - Eexd IIC T4 -4pole
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