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  • Home
  • Fan Store
    • Domestic Fans
      • Bathroom / Kitchen Extractor Fans
      • Centrifugal Inline Fans
      • Heat Recovery & Wholehouse Units
      • Fan Inserts
      • Mixed Flow Inline Fans
      • Utility Room Fans
      • Window & Wall fans
    • Commercial Fans
      • Box Fans
      • Bifurcated Axial Flow Fans
      • Cased Axial Fans
      • Gigabox Centrifugal Fans
      • Heater Batteries
      • Medium Pressure Fans
      • Plate Axial Fans
      • Roof Mounted Fans
      • Rectangular Duct Fans
      • Twin Fans
    • Controllers & Accessories
      • Ancillary Kits
      • Anti Vibrations Mounts
      • Backdraft Shutters & Dampers
      • Controllers
      • Ductwork & Connections
      • Fan Guards
      • Filter Boxes & Media
      • Fire Dampers & Volume Control Dampers
    • Controllers & Accessories Cont.
      • Flanges
      • Flexible Connectors
      • Louvre Shutters
      • Mounting Feet
      • Other Accessories
      • Roof Fan Accessories
      • Silencers
      • Valves, Grilles & Louvres
      • Roof Support Systems
    • Clearance Fans & Accessories
      • Clearance Fans & Fan Accessories
  • Clearance Fans & Fan Accessories
  • Ducting Store
    • Spiral Ducting & Fittings
      • 3 Metre Spiral
      • 1.5 Metre Spiral
      • Bends
      • Bird Beaks
      • Curved Boots
      • Duct Connectors
      • Reducers
      • Pressed Saddles
      • Flanged Spigots
      • Flat Shoes
      • T Pieces
      • Dampers
      • Roof Cowls
      • Jet Cowls
      • Y Twin Bends
      • Roof Cravat
    • Fixings & Supports
      • Duct Support Rings
      • Fasteners & Fixings
      • Slotted Channel
      • Studding – Threaded Rod
      • Support Banding
      • Cantilever Arms
      • Cutting Tools
      • Pre-Cut Wire Packs
      • Wire Rope & Locks
      • Flanges & Connectors
        • Multi Drilled Flange Rings
        • Fast Clamps
      • Attenuators
        • Attenuators (Silencers)
    • Flexible Ducting
      • Combi Flexible Ducting
      • Non Insulated Flexible Ducting
      • Insulated Flexible Ducting
      • Banding & Locks
      • Hose Clips
      • Filters & Filter Boxes
        • Baffle Filters
        • Mesh Filters
        • Pleated Panel Filters
        • Filter Boxes
        • Filter Box – Replacement Media
    • Dampers & Access Doors
      • Blast Gate Dampers
      • Access Doors
      • Fire Dampers
      • Multi-Blade Volume Control Dampers
      • Non-return (backdraft) Dampers
      • Single Blade Balancing Dampers
      • Roof Support Systems
        • Roof Support Systems
      • Fabricated Items
        • Fabricated Items
    • Grilles & Louvres
      • Egg Crate Grilles
      • Diffusers
      • Louvres
      • Pressed Steel Grille – White
      • Intumescent Fire Blocks
      • Plenum Boxes
      • Air Valves
      • Circular Weather Louvre
      • Round Ceiling Diffusers
      • Circular Weather Louvre
      • Gravity Outlets
      • Louvred Grille With Flyscreen
    • Airturn Track & Vane
      • Airturn Track
      • Airturn Vane
      • Flashings
        • Red (HOT)
        • Standard Black
      • Sealant, Tapes & Insulation
        • Ductwrap
        • Sealant Tubes
        • Tapes
        • Sprays
      • Ducting Store Clearance Items
        • Clearance Ducting Store Items
  • Clearance Ducting Store Items
  • Plastic Ducting Store
    • Domus Ventilation
      • Circular Ducts & Bends
        • Ducting
        • 90 Degree Horizontal Bend
        • 45 Degree Horizontal Bend
        • 1 Metre Sleeve
        • Circular Adapters
        • Clips
        • Horizontal T Piece
        • Y Piece
        • Straight Connector
        • Straight Connector With Damper
        • In-Line Adapter Space Saving
        • Telescopic Assembly
        • Flexible Hose Connector
        • Flexible Hose Connector With Threaded Socket
      • Circular Duct & Bends Continued
        • High Rise Kit
        • Telescopic Background Ventilator Kit
        • Tumble Dryer Extraction Kit – Cowled
        • Wall Plate
    • Rectangular Duct & Bends
      • 110x54mm Duct
      • 204x60mm Duct
      • 220x90mm Duct
      • 90 Degree Horizontal Bends
      • 90 Degree Vertical Bends
      • 45 Degree Horizontal Bend
      • 45 Degree Vertical Bends
      • Duct Clips
      • Duct Connectors
      • Duct Connector With Damper
      • End Caps
      • Horizontal T Piece
      • Hose Connectors
      • Flexible Hose
      • Plenum Fixed Spigot
      • Round To Rectangular Adapters
      • Rectangular To Rectangular Adapter
      • Plenum Offset Rotating Spigot
      • Cooker Hood Extraction Kits
      • Wall Plates
    • External Wall Duct Terminals
      • Cowled Outlet With Damper
      • Louvered Grille Outlet
      • Outlet With Gravity Flaps
      • Louvered Soffit Vent Outlet
      • Outlet Airbrick
      • Outlet Airbrick With Damper
      • Soil Roof Vent Cowls
    • Internal Duct Terminals
      • Architectural Room Terminal
      • Circular Diffusers
      • Extract & Supply Valves
      • Sapphire Range Fan Fascia
    • Aluminium Flexible Hose
      • 100mm Aluminium Flexible Hose 
      • 125mm Aluminium Flexible Hose 
      • 150mm Aluminium Flexible Hose 
      • Aluminium Duct Clip
      • EasiPipe – Rigid Duct
        • Aluminium Silver
        • Duct Clip Aluminium
        • Flexible Hose – White
        • Insulated Hose – Silver
    • Thermal Insulation
      • 100mm Thermal Insulation
      • 125mm Thermal Insulation
      • 150mm Thermal Insulation
      • 204x60mm Thermal Insulation
      • 220x90mm Thermal Insulation
  • Nordfab QF & DFS Ducting
  • RECTANGULAR DUCTING
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Controllers

Home / Controllers & Accessories / Controllers / Page 4
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Merlin 500S - Utility Isolation Panel - S&S Northern
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Merlin 500S – Utility Isolation Panel – S&S Northern

£267.00 ex. VAT
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Merlin CT1650+ - Ventilation Interlock System with Current Monitoring - S&S Northern
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Merlin CT1650+ – Ventilation Interlock System with Current Monitoring – S&S Northern

£435.00 ex. VAT
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Merlin CT1250 - Gas interlock system with two built in current monitors - S&S Northern
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Merlin CT1250 – Gas interlock system with two built in current monitors – S&S Northern

£287.00 ex. VAT
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DSEL 2 - Reversing switch - Helios
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DSEL 2 – Reversing switch – Helios

£69.17 ex. VAT
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149-ODE3-24400-3KA4B - Eltadrive Variable Speed drive IP66 - Elta
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149-ODE3-24400-3KA4B – Eltadrive Variable Speed drive IP66 – Elta

£1,280.33 ex. VAT
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149-DCV-H1 - Room Humidistat - Elta
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149-DCV-H1 – Room Humidistat – Elta

£82.78 ex. VAT
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RRB-100 - Electromechanical Single Phase Speed Control - Soler & Palau
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RRB-100 – Electromechanical Single Phase Speed Control – Soler & Palau

£108.68 ex. VAT
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SWE - Helios - Air Flow Switch
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SWE – Helios – Air Flow Switch

£233.29 ex. VAT
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ZNI - Helios - Overrun Timer
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ZNI – Helios – Overrun Timer

£72.46 ex. VAT
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HY 3 SI - Helios - Ventilation Hygrostat
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HY 3 SI – Helios – Ventilation Hygrostat

£87.19 ex. VAT
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RDS 11 - Helios - Transformer Controller With Motor Protection
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RDS 11 – Helios – Transformer Controller With Motor Protection

£1,074.99 ex. VAT
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TSD 3.0 - Helios - Transformer Controller
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TSD 3.0 – Helios – Transformer Controller

£388.01 ex. VAT
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ESA 3i - Industrial Speed Controller - Helios
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ESA 3i – Industrial Speed Controller – Helios

£114.20 ex. VAT
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TDID 8A - EA900027 - Transformer Three Phase - Flakt Woods
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TDID 8A – EA900027 – Transformer Three Phase – Flakt Woods

£565.80 ex. VAT
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TDID 2.5A - EA900025 - Transformer Three Phase - Flakt Woods
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TDID 2.5A – EA900025 – Transformer Three Phase – Flakt Woods

£341.16 ex. VAT
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ME 1.1 - EA901157 - Speed Controller - Flakt Woods
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ME 1.1 – EA901157 – Speed Controller – Flakt Woods

£104.64 ex. VAT
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ME 1.10 - EA901160  - Speed Controller - Flakt Woods
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ME 1.10 – EA901160 – Speed Controller – Flakt Woods

£167.28 ex. VAT
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TEM 050 - 103519 - 5-step transformer TEM 5.0 A transformer - Ruck
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TEM 050 – 103519 – 5-step transformer TEM 5.0 A transformer – Ruck

£361.74 ex. VAT
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MTY 2 - 103424 - Electronic variable control 2.0 A - Ruck
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MTY 2 – 103424 – Electronic variable control 2.0 A – Ruck

£144.36 ex. VAT
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BDT KLIMA - 117836 - Remote control - Ruck
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BDT KLIMA – 117836 – Remote control – Ruck

£214.65 ex. VAT
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DSZ - Speed limiter - Helios
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DSZ – Speed limiter – Helios

£71.48 ex. VAT
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DS 2 - Two Speed on/off switch - Helios
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DS 2 – Two Speed on/off switch – Helios

£115.30 ex. VAT
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RMB 10 - 5 Step & Off Auto Transformer 10A Max. 230V - Soler & Palau
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RMB 10 – 5 Step & Off Auto Transformer 10A Max. 230V – Soler & Palau

£449.93 ex. VAT
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RMB 1.5 - 5 Step & Off Auto Transformer 1.5A Max. 230V - Soler & Palau
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RMB 1.5 – 5 Step & Off Auto Transformer 1.5A Max. 230V – Soler & Palau

£226.72 ex. VAT
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VFD-T 9A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau
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VFD-T 9A IP54 (3-PH) – Variable Frequency Inverter – Soler & Palau

£872.45 ex. VAT
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REV 3N - Transformer Speed Controller - Soler & Palau
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REV 3N – Transformer Speed Controller – Soler & Palau

£499.02 ex. VAT
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MWS 7.5  - Transformer Controller With Motor Protection Unit - Helios
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MWS 7.5 – Transformer Controller With Motor Protection Unit – Helios

£480.10 ex. VAT
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MWS 1.5 - Transformer Controller With Motor Protection Unit  - Helios
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MWS 1.5 – Transformer Controller With Motor Protection Unit – Helios

£266.27 ex. VAT
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CR-150 Control unit for HV-150 A
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CR-150 – Control Unit For HV-150 A – Soler & Palau

£45.10 ex. VAT
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REB-1R - Speed Controller Including Reverse Switch - Soler & Palau
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Controllers

REB-1R – Speed Controller Including Reverse Switch – Soler & Palau

£228.63 ex. VAT
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CS2 - Current Monitor (2 X Fan Extract/Supply) - S&S Northern
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CS2 – Current Monitor (2 X Fan Extract/Supply) – S&S Northern

£112.00 ex. VAT
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PM2+ - Double Current Monitor - S&S Northern
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PM2+ – Double Current Monitor – S&S Northern

£207.00 ex. VAT
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Merlin 1000V+ - Gas Pressure Proving, Electrical Isolation & Ventilation Interlocking System incl. Gas Pressure Transducer - S&S Northern
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Merlin 1000V+ – Gas Pressure Proving, Electrical Isolation & Ventilation Interlocking System incl. Gas Pressure Transducer – S&S Northern

£548.00 ex. VAT
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Merlin GDP2 - 2 Channel Detector - S&S Northern
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Merlin GDP2 – 2 Channel Detector – S&S Northern

£308.00 ex. VAT
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Merlin GDPX+ - Gas Pressure Proving & Detection System - S&S Northern
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Merlin GDPX+ – Gas Pressure Proving & Detection System – S&S Northern

£842.00 ex. VAT
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ETY 25 - 115892 - Electronic variable control 2.5 A - Ruck
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ETY 25 – 115892 – Electronic variable control 2.5 A – Ruck

£133.54 ex. VAT
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Products
  • Bathroom / Kitchen Extractor Fans
  • Utility Room Fans
  • Window & Wall fans
  • Plate Axial Fans
  • Cased Axial Fans
  • Bifurcated Axial Flow Fans
  • Box Fans
  • Centrifugal Inline Fans
  • Gigabox Centrifugal Fans
  • Roof Mounted Fans
  • Rectangular Duct Fans
  • Mixed Flow Inline Fans
  • Controllers & Accessories
  • Ducting Store
Customer Services
  • Contact Us
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Come and see us
Norwich Branch:

Unit 4 Albertine Close,

Sweet Briar Industrial Estate,

Norwich NR3 2FA

Chelmsford Branch:

Unit 3 Grafton Place,

Dukes Park Ind Est,

Chelmsford, CM2 6TG

Northampton Branch:

Unit 12 Scotia Close,

Brackmills Ind Est,

Northampton, NN4 7HR

Monday to Friday 6:00am – 5:00pm Follow us
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© L&B Fans 2026. L&B Fans is a trading name of L&B Ventilation Supplies Ltd. Online prices are for a limited time only, and subject to change see our full Terms & Conditions. Registered in England and Wales No. 10679544. Unit 4 Albertine Close, Sweet Briar Industrial Estate, Norwich, Norfolk, NR3 2FA. Website by JMJ Digital
  • Home
  • Fan Store
    • Domestic Fans
      • Bathroom / Kitchen Extractor Fans
      • Centrifugal Inline Fans
      • Heat Recovery & Wholehouse Units
      • Fan Inserts
      • Mixed Flow Inline Fans
      • Utility Room Fans
      • Window & Wall fans
    • Commercial Fans
      • Box Fans
      • Bifurcated Axial Flow Fans
      • Cased Axial Fans
      • Gigabox Centrifugal Fans
      • Heater Batteries
      • Medium Pressure Fans
      • Plate Axial Fans
      • Roof Mounted Fans
      • Rectangular Duct Fans
      • Twin Fans
    • Controllers & Accessories
      • Ancillary Kits
      • Anti Vibrations Mounts
      • Backdraft Shutters & Dampers
      • Controllers
      • Ductwork & Connections
      • Fan Guards
      • Filter Boxes & Media
      • Fire Dampers & Volume Control Dampers
    • Controllers & Accessories Cont.
      • Flanges
      • Flexible Connectors
      • Louvre Shutters
      • Mounting Feet
      • Other Accessories
      • Roof Fan Accessories
      • Silencers
      • Valves, Grilles & Louvres
      • Roof Support Systems
    • Clearance Fans & Accessories
      • Clearance Fans & Fan Accessories
  • Clearance Fans & Fan Accessories
  • Ducting Store
    • Spiral Ducting & Fittings
      • 3 Metre Spiral
      • 1.5 Metre Spiral
      • Bends
      • Bird Beaks
      • Curved Boots
      • Duct Connectors
      • Reducers
      • Pressed Saddles
      • Flanged Spigots
      • Flat Shoes
      • T Pieces
      • Dampers
      • Roof Cowls
      • Jet Cowls
      • Y Twin Bends
      • Roof Cravat
    • Fixings & Supports
      • Duct Support Rings
      • Fasteners & Fixings
      • Slotted Channel
      • Studding – Threaded Rod
      • Support Banding
      • Cantilever Arms
      • Cutting Tools
      • Pre-Cut Wire Packs
      • Wire Rope & Locks
      • Flanges & Connectors
        • Multi Drilled Flange Rings
        • Fast Clamps
      • Attenuators
        • Attenuators (Silencers)
    • Flexible Ducting
      • Combi Flexible Ducting
      • Non Insulated Flexible Ducting
      • Insulated Flexible Ducting
      • Banding & Locks
      • Hose Clips
      • Filters & Filter Boxes
        • Baffle Filters
        • Mesh Filters
        • Pleated Panel Filters
        • Filter Boxes
        • Filter Box – Replacement Media
    • Dampers & Access Doors
      • Blast Gate Dampers
      • Access Doors
      • Fire Dampers
      • Multi-Blade Volume Control Dampers
      • Non-return (backdraft) Dampers
      • Single Blade Balancing Dampers
      • Roof Support Systems
        • Roof Support Systems
      • Fabricated Items
        • Fabricated Items
    • Grilles & Louvres
      • Egg Crate Grilles
      • Diffusers
      • Louvres
      • Pressed Steel Grille – White
      • Intumescent Fire Blocks
      • Plenum Boxes
      • Air Valves
      • Circular Weather Louvre
      • Round Ceiling Diffusers
      • Circular Weather Louvre
      • Gravity Outlets
      • Louvred Grille With Flyscreen
    • Airturn Track & Vane
      • Airturn Track
      • Airturn Vane
      • Flashings
        • Red (HOT)
        • Standard Black
      • Sealant, Tapes & Insulation
        • Ductwrap
        • Sealant Tubes
        • Tapes
        • Sprays
      • Ducting Store Clearance Items
        • Clearance Ducting Store Items
  • Clearance Ducting Store Items
  • Plastic Ducting Store
    • Domus Ventilation
      • Circular Ducts & Bends
        • Ducting
        • 90 Degree Horizontal Bend
        • 45 Degree Horizontal Bend
        • 1 Metre Sleeve
        • Circular Adapters
        • Clips
        • Horizontal T Piece
        • Y Piece
        • Straight Connector
        • Straight Connector With Damper
        • In-Line Adapter Space Saving
        • Telescopic Assembly
        • Flexible Hose Connector
        • Flexible Hose Connector With Threaded Socket
      • Circular Duct & Bends Continued
        • High Rise Kit
        • Telescopic Background Ventilator Kit
        • Tumble Dryer Extraction Kit – Cowled
        • Wall Plate
    • Rectangular Duct & Bends
      • 110x54mm Duct
      • 204x60mm Duct
      • 220x90mm Duct
      • 90 Degree Horizontal Bends
      • 90 Degree Vertical Bends
      • 45 Degree Horizontal Bend
      • 45 Degree Vertical Bends
      • Duct Clips
      • Duct Connectors
      • Duct Connector With Damper
      • End Caps
      • Horizontal T Piece
      • Hose Connectors
      • Flexible Hose
      • Plenum Fixed Spigot
      • Round To Rectangular Adapters
      • Rectangular To Rectangular Adapter
      • Plenum Offset Rotating Spigot
      • Cooker Hood Extraction Kits
      • Wall Plates
    • External Wall Duct Terminals
      • Cowled Outlet With Damper
      • Louvered Grille Outlet
      • Outlet With Gravity Flaps
      • Louvered Soffit Vent Outlet
      • Outlet Airbrick
      • Outlet Airbrick With Damper
      • Soil Roof Vent Cowls
    • Internal Duct Terminals
      • Architectural Room Terminal
      • Circular Diffusers
      • Extract & Supply Valves
      • Sapphire Range Fan Fascia
    • Aluminium Flexible Hose
      • 100mm Aluminium Flexible Hose 
      • 125mm Aluminium Flexible Hose 
      • 150mm Aluminium Flexible Hose 
      • Aluminium Duct Clip
      • EasiPipe – Rigid Duct
        • Aluminium Silver
        • Duct Clip Aluminium
        • Flexible Hose – White
        • Insulated Hose – Silver
    • Thermal Insulation
      • 100mm Thermal Insulation
      • 125mm Thermal Insulation
      • 150mm Thermal Insulation
      • 204x60mm Thermal Insulation
      • 220x90mm Thermal Insulation
  • Nordfab QF & DFS Ducting
  • RECTANGULAR DUCTING
  • Contact Us
  • Support
    • Useful Info
    • Credit Account Application
    • Returns Policy
    • Terms & Conditions
    • Delivery
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