• Model:DR-L

Ducting Reducers Long - 400mm

£ 29.14 (excl. VAT)

£ 34.97 (inc. VAT)

Long Reducers for 400mm spiral ducting.
Provides two male fittings to insert into spiral.

Select size below.

Please note these are for reducing and fitting inside ducting.
To mount directly onto a fan spigot or other 'male' fitting you will need a Female ducting connector.

Available Options

1 x NKS-D swirl diffuser v-300 x 300mm1 x Elta 10 Amp Electronic single phase speed controller.1 x Circular Ceiling Diffuser - TST 1252 x ELTA - Single Phase Transformer 2amps1 x Round ceiling diffuser 400mm1 x Circular Ceiling Diffuser - TST 2001 x Circular Ceiling Diffuser - TST 1003 x EC6H - Reversible Group Fan Electronic Controller1 x Balance S Diffuser - NO RING - 100mm3 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1601 x JSR 200 Painted RAL50181 x Curved Blade Grille 600x600 (2way blow)1 x Elta 3 Amp Electronic single phase speed controller.2 x Elta 2 Amp Electronic single phase speed controller.4 x Round ceiling diffuser 300mm2 x EFSC-3N- Single Phase Speed Control3 x Round ceiling diffuser 200mm1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x ELTA - Single Phase Transformer 4amps2 x AIRVENT speed control - AIR4019613 x Airvent ceiling fan controller3 x Elta 6 Amp Electronic single phase speed controller.1 x PCA Diffuser - PCA-2503 x Run On Timer - 5s - 4hrs - RT5A1 x Time Delay Unit - DT20B2 x Speed Controller - REB31 x TTC-2000 Three phase electric heater controller2 x Transformer (silent) speed controller - RE 1.5 Amp2 x ACO8AC/EC AutoChangeover panel3 x ACOAS/ AC/EC Auto Changeover 8Amp1 x Elta ACO Panel 149-ACO14E1 x EC-Vent control board1 x ACO 149-ACO1/EDV1 x EM30-24 Electro-Mechanical Control Panel1 x EC-Vent Room Unit1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Systemair Save Connect 2.0 Internet Module1 x Elta ACO Panel 149-ACO18B2 x CBT-100N Centrifugal2 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Egg Crate Grille with Dust panel filter 1 inch- 595x5951 x Single Deflection Grille 400mm with OBD damper1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x CBB-60N Centrifugal1 x Non Vision 150mm x 150mm (Air Transfer) Grille - With Flange - MILL FINISH3 x Mini Diffuser - 100mm1 x Chaysol DA 9/9 3 speed1 x Egg Crate Grille with Dust panel filter 1 inch- 300x3001 x Economy Airvent 150mm Fan With Pullcord & Shutters1 x Economy Airvent 100mm Fan with Timer1 x Chaysol da 9-7 - 3 Speed1 x DV-ROF-V-225 Roof mounted unit1 x Same Day Shipping Surcharge - City Sprint1 x Biflow SB250-CON4-1 - High Temperature Bifurcated Fan1 x DV-ROF-V-315 Roof mounted unit1 x DPD 10:30AM Delivery Surcharge1 x D2E-146-AP47-751 x Manrose 150mm - XF150BP1 x 18M - 80mm PVC flexible ducting1 x Manrose T12 STANDARD Transformer- T12S1 x Acoustic Box Fans (Inline) - CAB-1001 x Manrose 150mm - XF150BHP1 x Economy Airvent 150mm Fan1 x Impeller Side Guard - 800mm1 x Control board kit Smarty 4X P 1.1 F2 Fan 230V1 x Manrose T12 TIMER Transformer- T12T1 x DPD SATURDAY Delivery Surcharge1 x Pallet Delivery Surcharge1 x Economy Airvent 100mm Fan with Timer/Humidistat/Pullcord1 x Chaysol da 9-7 - V7099331 x CAB-150 ECOWATT Energy Efficient Acoustic Box Fan1 x HIMF - Mixed Flow Fan 125mm Inline Fan1 x Round ceiling diffuser 350mm2 x Push Timer Switch - ZA43 x Helios ZNE Electronic Fan Overrun Timer2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x 7 Day Programmable TIMECLOCK1 x Speed Controller - REB51 x MWS 5 – Transformer Controller With Motor Protection Unit1 x Northern Ireland Pallet Surcharge1 x Redelivery Charge1 x Small Centrifugal Fans CBM/2-133/190 185w1 x CTVT/4-400 High Temp Roof Fan - 51369260002 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x Helios TSW 7.5 Amp Transformer speed controller2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans3 x CS2 Current Switch2 x Vent Axia ACM 100 inline mixed flow duct fan2 x Isolator Switch - ISOSW2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp2 x TG-K Duct temperature sensor2 x Vent Axia T-Series Controller1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x Envirovent G4 Filter - SL-G4/F71 x Elta 3 Amp Electronic single phase speed controller with TK3 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x CBS-60 Outlet Flange for CSB/CBT-601 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x Speed Controller - REB1-N2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x CBM 9-9 550w 4P VR (Open Motor)1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)2 x MTP 10, 10K, Speed control2 x Transformer Speed Control - RTRE- 1.5Amp4 x Speed Controller - REB13 x PIR Sensor - PIR21 x MTS10- extractor fan 3 step switch2 x Contactor Interface Station - CI92 x EM30-24 Control Panel Commissioning Service2 x DDMP 09/09 Mounting Flange2 x UB47- Universal Insulated Terminal2 x Silentub - STUB 1001 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR3 x CFI In-line 150 - Carbon Filter1 x Vent Axia Trickle & Boost Switch1 x KBA- Inlet Mounting 1802 x Elta SCP400/4-1AC - IP552 x Duct Termination with Mesh - 150mm1 x CBM 9/7 4p 420W RE-VR1 x DDMP 12-09 1F 1800W M6A4 DA81 x DDMP 10-10 FLANGE1 x JETLINE-100 ECOWATT - In Line Centrifugal Duct Fan1 x AL 315 D2 01 - High Performance Long Cased Axial Fan (3 phase)1 x Traditional T-Series Window Fan - TX12WW1 x Chaysol DA 7/91 x Elta Standard Ambient Flexible Connector - 315mm1 x Contra Rotating TCBBx2-630 Cased Axial - Single Phase - IP65 - Soler & Palau1 x JETLINE-100 - In Line Centrifugal Duct Fan1 x AL 450 EC 03 AXIALINE - High Performance Long Cased Axial Fan1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-43 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Speed controller with Reverse - REB-1R1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan1 x Remote controller FLEX - for VEKO INT2 x CPTA-E Flush mounted PIR sensor with timer1 x REU 1.5amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Transformer 5 Speed Controller - ATC1-4TK1 x Transformer 5 Speed Controller - ATC1-10TK3 x Transformer 5 Speed Controller - ATC1-12TK2 x Helios TSW 3 Amp Transformer speed controller1 x REU 7amp Speed control - Two Speed Five-Step Transformer - Trickle and Boost2 x Vent Axia ACM 150 inline mixed flow duct fan1 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Transformer speed controller - ATC1 - 1.5 Amps1 x COM-32 x MWS 3 – Transformer Controller With Motor Protection1 x TEM 035 - 5 Speed Transformer Speed Control2 x BEAS-control module1 x Vent Axia ACM 125 inline mixed flow duct fan2 x Elta 6 Amp Electronic single phase speed controller with TK2 x Two Speed Switch - REGUL-21 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan2 x WS - Reversing Switch from Helios Fans2 x Remote Timer Control - 13513 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x EBM-Papst D2E097-BK76-98 Double inlet2 x Transformer Speed Control - RTRE- 12.0Amp1 x Helios HQW-200/2 - IP551 x Helios HQW-630/4 - IP551 x Speed Controller - REB101 x Transformer 5 Speed Controller - ATC1-2TK3 x TG-K3/NTC10-01 - Duct temperature sensor2 x Isolator Switch - EFF-ISO2 x Transformer (silent) speed controller - RE 5.0 Amp1 x Transformer Speed Control - RTRE- 5.0Amp2 x Commercial Single or 3 phase Fan Reversing Switch - RS14 x Helios HQW-315/4 - IP551 x REE-1 Electronic Speed Controller1 x Rectangular Airbrick Adaptor4 x REB-CVF 0-10v Controller4 x Transformer (silent) speed controller - RE 3.0 Amp1 x REE-2 Electronic Speed Controller1 x Multiflow SMB550/4-1AC2 x DEF-CBM-RE-7 - Protection Guard2 x Skyflow SSR Horizontal Roof Cowl SSR80B2 x DDMP 09-09 3F 2130W M6A4 DG01 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x MEV Spider Wireless boost Switch - MEV-SWH-W2 x Vent Axia Silent 100T (TIMER)2 x TG-R room temperature sensor1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Elta Variable Speed Drive IP66 - 2.2KW3 x PIR Sensor - PIR44 x VTR 300 STD Filter Kit1 x Silent 100 Window Kit - windowS1 x RDH FLEX-SQUARE - ADH/RDH 04502 x QPTW 250C Acoustic Twin Fan with Controller1 x Elta Variable Speed Drive IP66 - 0.75KW1 x Speed Controller - REB162 x Compact SCD450/4-1AC1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x VEKA INT 2000/15.0-L1 EKO1 x DA9/9-NT2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x TD160-NT Mixvent - 100mm - TD160 Timer2 x TG-K Duct temperature sensor1 x Electrostatic Precipitator - 1H x 3W2 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x CSB-60 Centrifugal fan2 x IR24-P - Presence detector1 x EBM-Papst D3G133-BF05-14 Double inlet4 x VTR 500 STD Filter Kit1 x CO2 Room Sensor - CO2-R1 x Ancillary Pack for SLC-800 for 4 Pole and SLC-800/6B-3AC1 x CBA-100 Inlet Flange for CBT-1001 x HIMF - Mixed Flow Fan 100mm Inline Fan1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x Lo-Carbon Silhouette 100T (Timer)3 x CBM 7/7 147w 4P RE-VR2 x Duct Termination with Mesh - 100mm1 x SPI-100 C Iris damper2 x Flakt Woods ME 1.3 speed controller 3amp - EA9011581 x Helios ESA-1 Surface mounted Speed Control 1amp2 x ACO3TO-ADS-VFC-7.1A1 x Helios HQW-355/4 - IP551 x DDMP 07/07 Mounting Flange2 x 100mm Round Connector with Damper1 x TUNE-R-200-3-M3 - Control Damper1 x Silentub - STUB 2001 x Duct Termination with Mesh - 560mm2 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011591 x DDMP 10-10 1F 1000W M6A2 DA51 x Quietflow Twin SQTDCV250-1ECL1 x CBS-100 Outlet Flange for CBT-1001 x TUNE-R-250-2-M4 - Control Damper2 x RUCK MTP 20, 10K, Speed control1 x DPD 12PM Delivery Surcharge1 x Potentiometer EGH 01 - for DDMP Fans2 x Universal Pipe Fixing Clip1 x CBB-80N Centrifugal1 x Binks Bullows - Spray Booth Filter1 x Duct Termination with Mesh - 450mm3 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Quietflow SQS250-1ECL - Centrifugal Box Fan2 x CAD-COMPACT 900 ADVANCED N8 - MVHR unit1 x Helios VARW 450/4 - TK1 x Vent Axia T-Series Wall Model TX6WL1 x Duct Termination with Mesh - 250mm1 x Duct Termination with Mesh - 200mm1 x Flat Roof Terminal -OFT 5 - Asphalt1 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x SDD-U Anti Vibration Pads1 x TD ECOWATT 160/100 Inline Duct Fan - TD-ECOWATT1 x Helios SVR EC 160 B – SlimVent Centrifugal Fan Box1 x KRJ - 120 Inlet Guard for CBB/CBT fans1 x Elta SCP315/4-1AC - IP551 x Elta HXP 800mm 6-Pole (Three Phase)1 x DDMP 10-08 1F 1000W M6A2 DA51 x CBT-100N Centrifugal ATEX II 2G Exe II T31 x Elta SPA500/4-1AC - IP541 x CBT-130N Centrifugal1 x CBT-170 Centrifugal2 x DDMP 12-12 3F 5700W M6M0 DG71 x DDMP 12-09 FLANGE1 x CBP-7/7-RC1 x Duct Termination with Mesh - 315mm1 x Biflow SB315-CON4-1 - High Temperature Bifurcated Fan1 x Duct Termination with Mesh - 400mm
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
Circular Inline Silencers - 0.6M long - SLU-600
£ 58.40

I have a loft mount extractor fan which was very noisy. I ...