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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 8
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149-DCV-CO2 CO2 Transmitter - Elta
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149-DCV-CO2 CO2 Transmitter – Elta

£637.00 ex. VAT
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149-DCV-MK3-CTRL DCV LCD Display - Elta
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149-DCV-MK3-CTRL DCV LCD Display – Elta

£448.44 ex. VAT
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149-DCV-HRT Humidity Transmitter - Elta
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149-DCV-HRT Humidity Transmitter – Elta

£333.28 ex. VAT
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149-DCV-PIR Presence Detector -Elta
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149-DCV-PIR Presence Detector -Elta

£129.55 ex. VAT
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149-DCV-DPT150 Pressure Transmitter - Elta
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149-DCV-DPT150 Pressure Transmitter – Elta

£445.05 ex. VAT
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149-TC33 (3amp) Three Phase - Transformer Controller - Elta
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149-TC33 (3amp) Three Phase – Transformer Controller – Elta

£431.08 ex. VAT
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MSD 400V 0-25A - Soler & Palau - DOL Starter
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MSD 400V 0-25A – Soler & Palau – DOL Starter

£285.55 ex. VAT
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RMT 12 - 5 Step & Off Auto Transformer 12A Max. 400V - Soler & Palau
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RMT 12 – 5 Step & Off Auto Transformer 12A Max. 400V – Soler & Palau

£1,213.85 ex. VAT
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RMT 8 - 5 Step & Off Auto Transformer 8A Max. 400V - Soler & Palau
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RMT 8 – 5 Step & Off Auto Transformer 8A Max. 400V – Soler & Palau

£966.89 ex. VAT
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RMT 2.5 - 5 Step & Off Auto Transformer 2.5A Max. 400V - Soler & Palau
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RMT 2.5 – 5 Step & Off Auto Transformer 2.5A Max. 400V – Soler & Palau

£549.05 ex. VAT
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RMT 1.5 - 5 Step & Off Auto Transformer 1.5A Max. 400V - Soler & Palau
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RMT 1.5 – 5 Step & Off Auto Transformer 1.5A Max. 400V – Soler & Palau

£465.26 ex. VAT
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RMB 8 - 5 Step & Off Auto Transformer 8A Max. 230V - Soler & Palau
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RMB 8 – 5 Step & Off Auto Transformer 8A Max. 230V – Soler & Palau

£350.60 ex. VAT
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VFD-T 17A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau
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VFD-T 17A IP54 (3-PH) – Variable Frequency Inverter – Soler & Palau

£1,187.73 ex. VAT
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VFD-T 13A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau
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VFD-T 13A IP54 (3-PH) – Variable Frequency Inverter – Soler & Palau

£992.08 ex. VAT
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VFD-T 6.8A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau
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VFD-T 6.8A IP54 (3-PH) – Variable Frequency Inverter – Soler & Palau

£722.36 ex. VAT
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REV 7N - Transformer Speed Controller - Soler & Palau
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REV 7N – Transformer Speed Controller – Soler & Palau

£586.53 ex. VAT
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REV 5N - Transformer Speed Controller - Soler & Palau
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REV 5N – Transformer Speed Controller – Soler & Palau

£563.38 ex. VAT
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MW - Helios - Full Motor Protection Unit - 1ph 230V
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MW – Helios – Full Motor Protection Unit – 1ph 230V

£88.88 ex. VAT
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PGWA 25 - Helios - Pole Switch - Surface Mounted
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PGWA 25 – Helios – Pole Switch – Surface Mounted

£115.77 ex. VAT
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PGWA 12 - Helios - Pole Switch - Surface Mounted
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PGWA 12 – Helios – Pole Switch – Surface Mounted

£95.89 ex. VAT
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PDA 25 - Helios - Pole Switch - Surface Mounted
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PDA 25 – Helios – Pole Switch – Surface Mounted

£128.63 ex. VAT
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PDA 12 - Helios - Pole Switch - Surface Mounted
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PDA 12 – Helios – Pole Switch – Surface Mounted

£85.37 ex. VAT
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PGWU 12 - Helios - Pole Switch, Flush Mounted
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PGWU 12 – Helios – Pole Switch, Flush Mounted

£69.01 ex. VAT
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PDU 12 - Helios - Pole Switch, Flush Mounted
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PDU 12 – Helios – Pole Switch, Flush Mounted

£86.53 ex. VAT
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PWGW - Helios - Reverse And Pole Switch
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PWGW – Helios – Reverse And Pole Switch

£154.37 ex. VAT
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PWDA - Helios - Reverse And Pole Switch
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PWDA – Helios – Reverse And Pole Switch

£169.57 ex. VAT
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RHS 6+2 - Helios - Isolating Switch
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RHS 6+2 – Helios – Isolating Switch

£87.71 ex. VAT
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RHS 3+1 - Helios - Isolating Switch
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RHS 3+1 – Helios – Isolating Switch

£78.35 ex. VAT
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TME 4 - Helios - Thermostats (four-step)
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TME 4 – Helios – Thermostats (four-step)

£121.61 ex. VAT
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WSUP-S - Helios - Clock Timer
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WSUP-S – Helios – Clock Timer

£245.57 ex. VAT
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ESE 2.5 - Helios - Electronic Speed Controller 1ph 230V
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ESE 2.5 – Helios – Electronic Speed Controller 1ph 230V

£139.16 ex. VAT
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ESD 11.5 - Helios - Electronic Speed Controller 3ph 400V
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ESD 11.5 – Helios – Electronic Speed Controller 3ph 400V

£901.61 ex. VAT
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EDTW - Helios - Temperature Controller
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EDTW – Helios – Temperature Controller

£433.85 ex. VAT
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EHSD 30 - Helios - Electronic Temperature Controller
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EHSD 30 – Helios – Electronic Temperature Controller

£1,447.72 ex. VAT
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EHS - Helios - Electronic Temperature Controller
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EHS – Helios – Electronic Temperature Controller

£268.96 ex. VAT
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REB16 - Fan Speed Controller - Soler & Palau
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REB16 – Fan Speed Controller – Soler & Palau

£405.00 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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