• Model:SLU-900

Circular Inline Silencers - 0.9M long - SLU-900

£ 84.35 (excl. VAT)

£ 101.22 (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 900mm 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

Available Options

1 x Speed Controller - REB51 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW2 x Elta Variable Speed Drive IP66 - 1.5KW1 x Frequency converter RUCK - FU 075 202 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP662 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 x FU 075 52 Frequency Inverter (IP20)1 x FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)2 x Elta Variable Speed Drive IP66 - 2.2KW1 x NKS-D swirl diffuser v-300 x 300mm1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x FU 075 04 Frequency Inverter (IP20)1 x Elta 10 Amp Electronic single phase speed controller.1 x ELTA - Three Phase Transformer 10amps1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)2 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1003 x Electronic extractor fan speed controller - FSC 1.51 x PCA Diffuser - PCA-3151 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 1252 x ELTA - Single Phase Transformer 2amps2 x Elta 6 Amp Electronic single phase speed controller with TK1 x EFSC-3N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 16amps1 x Airvent ceiling fan controller1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Circular Ceiling Diffuser - TST 1601 x Elta 2 Amp Electronic single phase speed controller.1 x JSR 200 Painted RAL50181 x Round ceiling diffuser 400mm1 x PCA Diffuser - PCA-2502 x Round ceiling diffuser 250mm1 x EFSC-6N- Single Phase Speed Control1 x ELTA - Single Phase Transformer 4amps2 x Round ceiling diffuser 300mm1 x COM-31 x AIRVENT speed control - AIR4019611 x ELTA - Single Phase Transformer 12amps2 x CS2 Current Switch1 x Round ceiling diffuser 350mm2 x Elta 6 Amp Electronic single phase speed controller.3 x Run On Timer - 5s - 4hrs - RT5A1 x Helios ZNE Electronic Fan Overrun Timer2 x Push Timer Switch - ZA43 x Multi Input Run On Timer - 0 - 20min - CFCU2 x 7 Day Programmable TIMECLOCK1 x TTC-2000 Three phase electric heater controller2 x ACO8AC/EC AutoChangeover panel2 x EM30-24 Electro-Mechanical Control Panel1 x CONTROL ECOWATT - Basic1 x EC-Vent control board1 x Elta ACO Panel 149-ACO14E1 x ACO 149-ACO1/EDV1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6301 x Easy-fix termination kit - High Rise Ventilator - EFT1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x EC-Vent Room Unit2 x Systemair Save Connect 2.0 Internet Module1 x Elta ACO Panel 149-ACO18B2 x EM30-24 Control Panel Commissioning Service1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3552 x Transformer Speed Control - RTRE- 1.5Amp1 x Elta Wall Cowl SWC56/631 x Elta Louvre Shutter - 400mm2 x GRA-100 External Grill by S&P1 x Elta Wall Cowl SWC35/401 x Elta Wall Cowl SWC25/311 x Elta Wall Cowl SWC45/501 x Egg Crate Grille with G2 Dust panel filter 1 inch- 300x3001 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7101 x Jet Cowl - 315mm1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x Single Deflection Grille 400mm with OBD damper1 x Non Vision 150mm x 150mm (Air Transfer) Grille - With Flange - MILL FINISH1 x CBB-60N Centrifugal1 x Mini Diffuser - 100mm1 x Egg Crate Grille with Dust panel filter 1 inch- 300x3001 x Same Day Shipping Surcharge - City Sprint1 x DPD 12PM Delivery Surcharge1 x Northern Ireland Pallet Surcharge2 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x Economy Airvent 150mm Fan With Pullcord & Shutters2 x DV-ROF-V-225 Roof mounted unit1 x CBM 7/9 4p 300W RE-VR1 x Economy Airvent 100mm Fan with Timer2 x Biflow SB250-CON4-1 - High Temperature Bifurcated Fan1 x Pallet Delivery Surcharge1 x Manrose T12 STANDARD Transformer- T12S1 x DPD SATURDAY Delivery Surcharge1 x Economy Airvent 150mm Fan1 x Rectangular Airbrick Adaptor1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x SAVE VSR 300 heat recovery unit1 x VTR 500 STD Filter Kit2 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x KBA- Inlet Mounting 1802 x CBM 9/7 4p 420W RE-VR1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)2 x Chaysol DA 9/9 3 speed1 x MV-Silent 250 Bathroom Extractor Fan Kit - Standard - No Timer2 x Chaysol da 9-7 - 3 Speed1 x KMBI 250 Connector rectangular/circular to install on the discharge of CMT1 x D2E-146-AP47-751 x Small Centrifugal Fans CBM/2-133/190 185w1 x CRBB/3-250/084M EC 2H01 x AW Sileo EC Plate Axial Fan - Three Phase - 1000mm2 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Transformer 5 Speed Controller - ATC1-4TK1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Transformer 5 Speed Controller - ATC1-12TK1 x Vent Axia ACM 150 inline mixed flow duct fan1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost1 x Helios TSW MCB Amp Transformer speed controller1 x Helios TSW 1.5 Amp Transformer speed controller1 x Helios TSW 10 Amp Transformer speed controller1 x Vent Axia ACM 100 inline mixed flow duct fan1 x Vent Axia ACM 125 inline mixed flow duct fan1 x BEAS-control module1 x Helios HQW-200/2 - IP551 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x CBS-60 Outlet Flange for CSB/CBT-603 x MTP 10, 10K, Speed control2 x UB47- Universal Insulated Terminal1 x VTR 300 STD Filter Kit1 x CO2 Room Sensor - CO2-R1 x Duct Termination with Mesh - 560mm2 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x Elta SCP400/4-1AC - IP552 x 100mm Round Connector with Damper1 x CBM 7/7 147w 4P RE-VR1 x ACO3TO-ADS-VFC-7.1A1 x IR24-P - Presence detector1 x Duct Termination with Mesh - 400mm1 x DEF-900AN2 x RUCK MTP 20, 10K, Speed control1 x DDMP 10-10 1F 1000W M6A2 DA51 x ACOAS/ AC/EC Auto Changeover 8Amp1 x CBB-80N Centrifugal1 x Potentiometer EGH 01 - for DDMP Fans1 x Vent Axia T-Series Wall Model TX9WL1 x Spiral end cap - 80mm1 x 125mm Round Connector with Damper2 x Biflow SB315-CON4-3 - High Temperature Bifurcated Fan1 x TD ECOWATT 160/100 Inline Duct Fan - TD-ECOWATT1 x Dektite Combo Pipe Flashing - DC210REC1 x Helios VARW 450/4 - TK1 x Elta SLC500/4B-1AC - IP551 x Elta Turboflow-TF - 450mm - Single phase1 x Air Quality Sensor - AQS1 x Atex Inline Fan 180mm - ERM18EXE1 x ELTA - Single Phase Transformer 8amps1 x Elta SCP630/4-1AC - IP551 x Spiral Ducting 1 meter - 355mm1 x DDMP 10-10 FLANGE1 x Elta SCP500/4-3AC - IP551 x Elta SCP450/4-1AC - IP551 x Elta SPA400/4-1AC - IP541 x Elta SCP350/4-1AC - IP551 x Impeller Side Guard - 450mm1 x Elta - SMT 125 Mixvent Inline Fan - Clearance Stock Line1 x DA 9/7 N2T1 x ERM180EXE Bracket1 x REB Ecowatt Speed Control - REB-ECO1 x MUB 062 630D4 Multibox1 x Helios SVR EC 160 B – SlimVent Centrifugal Fan Box1 x Elta SCP315/4-3AC - IP551 x AL 315 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x HPA Heavy Duty Flexible Ducting - HPA300-FD52 x CPTA-E Flush mounted PIR sensor with timer1 x Remote controller FLEX - for VEKO INT2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x Helios TSW 7.5 Amp Transformer speed controller1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Speed Controller - REB31 x ERR 20/1 Centrifugal inline fan1 x EBM-Papst D2E097-BK76-98 Double inlet1 x Helios HQW-630/4 - IP552 x WS - Reversing Switch from Helios Fans1 x Multiflow SMB550/4-1AC1 x TG-R room temperature sensor1 x Remote Timer Control - 13512 x Transformer Speed Control - RTRE- 12.0Amp2 x REB-CVF 0-10v Controller1 x Speed Controller - REB1-N1 x REE-1 Electronic Speed Controller3 x Transformer (silent) speed controller - RE 3.0 Amp1 x Transformer (silent) speed controller - RE 5.0 Amp1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x FFR 355 Filter Cassette1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x Silent 100 Window Kit - windowS1 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Transformer Speed Control - RTRE- 7.0Amp1 x PIR Sensor - PIR41 x Control switch - CR1501 x Transformer Speed Control - RTRE- 5.0Amp1 x Vent Axia Silent 100T (TIMER)1 x Speed Controller - REB2.5-N1 x CBM 9-9 550w 4P VR (Open Motor)1 x TD Mixvent 800/200 EEXEIIT31 x Transformer Speed Control - RTRE- 3.0Amp1 x MTS10- extractor fan 3 step switch1 x Skyflow SSR Horizontal Roof Cowl SSR80B1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Speed Controller - REB11 x Speed Controller - REB161 x TG-K Duct temperature sensor1 x Elta - Room Sensor - Temp/Humid/C021 x Contactor Interface Station - CI91 x Duct Termination with Mesh - 355mm2 x DDMP 10-08 3F 2210W M6A4 DG01 x ELM 20 EX Flexible Cuff for ERM 221 x AXC TP - 100mm Plastic Centrifugal Inline Fan1 x RS 80-50 L3 sileo. Centrifugal Rectangular Duct Fan1 x FAST-TRACK RANGE 75mm - Adjustable Air Restrictor1 x QPTW 250C Acoustic Twin Fan with Controller1 x CSB-60 Centrifugal fan1 x Duct Termination with Mesh - 710mm2 x Duct Termination with Mesh - 100mm1 x Trickle And Boost controller for use with the SLP EC Slimpak fans1 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x KBA- Inlet Mounting 2802 x TD160-NT Mixvent - 100mm - TD160 Timer1 x DVV 560D4-XM/F4001 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011591 x Ancillary Pack for SLC-800 for 4 Pole and SLC-800/6B-3AC1 x DEF-CBM-RE-7 - Protection Guard1 x Vertical Cowl and Fan (Single Phase) - RAV400-4-11 x Duct Termination with Mesh - 150mm2 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Duct Termination with Mesh - 450mm2 x Helios HQW-355/4 - IP551 x Flat Roof Terminal -OFT 5 - Asphalt2 x VEKA INT 2000/15.0-L1 EKO1 x CBT-80N Centrifugal1 x CBA-100 Inlet Flange for CBT-1001 x Comefri - TLZ 225 R - High Performance Scroll Fan1 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF450/4-1AC - Single Phase1 x KBA- Inlet Mounting 2251 x Binks Bullows - Spray Booth Filter1 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x DDMP 07/07 Mounting Flange1 x Duct Termination with Mesh - 250mm1 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Comefri - TLZ 560 R - High Performance Scroll Fan1 x CAD-COMPACT 900 ADVANCED N8 - MVHR unit2 x Flakt Woods ME 1.3 speed controller 3amp - EA9011581 x DS-2/2 2-Speed Switch IP54 (Single Phase)1 x DDMP 12-09 1F 1800W M6A4 DA82 x SDD-U Anti Vibration Pads1 x ELTA - Three Phase Transformer 3amps1 x CBS-100 Outlet Flange for CBT-1001 x TUNE-R-200-3-M3 - Control Damper1 x Envirovent Silent MV160/100S Mixvent - 100mm - (5 year warranty)1 x CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven1 x Elta SCP500/4-1AC - IP551 x TecFire Intumescent Damper - Rectangular 400x400mm1 x Biflow SB250-CON4-3 - High Temperature Bifurcated Fan
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