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- - × HQD 500/4/4 - Helios - Low Pressure Axial Plate Fan 1 × £969.70
  - × ASD-SGD 225 - Helios - Bell Mouth And Guard 1 × £107.50
  - × SDT-140 - StrutFast Trunking - 140x90 2M White - StrutFoot 1 × £59.00
  - × Multiflow SEL315/2A-1AC - Elta - Mixed Flow Fan 1 × £474.00
  - × VFD-T 9A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau 1 × £783.88
  - × Insulated Flexible Duct - 225mm Diameter 1 × £49.00
  - × RVS 500 - Helios - Back Draught Shutter 1 × £199.64
  - × RVM 500 - Helios - Back Draught Shutter 1 × £640.62
  - × 162562 - AL 800 D4 F4 02 - Axial duct fan flue gas - Ruck 1 × £4,218.24
  - × GBD 560/4/4 - 3PH GigaBox Centrifugal Fan - Helios 1 × £1,266.90
  - × PA 24 - Speed potentiometer - Helios 1 × £64.89
  - × 018-315-CLAMP - 315mm - Fast Clamps - Elta 1 × £43.75
  - × 63JM MaxFan (EQ641406) - High Pressure Long Case Axial Fan - Flakt Woods 1 × £2,735.70
  - × 060B-0630 - 630mm - Mounting Feet - Elta 1 × £72.00
  - × SSD 500 - Helios - Base Attenuator 1 × £1,575.22
  - × PIE-630 - Mounting Feet - Soler & Palau 1 × £59.85
  - × FR 500 - Helios - Flange 1 × £59.24
  - × VENT-125-ECOWATT - Soler And Palau - VENT ECOWATT In-line Centrifugal Fan 1 × £277.20
  - × 137670 - EM 125L E2 01 - 125mm Inline Tube Fan - Ruck 1 × £72.68
  - × SCD350/4-1AC - Case Mounted Axial Flow Fan - 1 ph - Elta 1 × £382.00
  - × HQW EC 500 A - Helios - EC Axial Plate Fan 1 × £1,793.52
  - × EBB-100 N HT - Bathroom, Utility Room & Kitchen Centrifugal Extract Fan - Soler & Palau 1 × £253.05
  - × HQW EC 355 A - Helios - EC Axial Plate Fan 1 × £818.32
  - × DLV 125 - Helios - Design Ventilation Valve 1 × £49.37
  - × GB-WSG 710/EC630 - Giga box rain repellent grille - Helios 1 × £436.72
  - × Combi Flexible Ducting - 225mm Diameter 1 × £26.99
  - × Quietflow Twin SQT200-1ECL - Elta - Centrifugal Twin Box Fan 1 × £1,598.56
  - × Raptor SPA630/4-3EC - Elta - EC-Plate Mounted Axial Flow Fan 1 × £1,740.00
  - × KABT/4 9000/500 (1.5KW 230/400V) - Soler And Palau - Three Phase 4 Pole - Acoustic Centrifugal Kitchen Extract Fan 1 × £1,657.06
  - × FM 400 - Helios - Flexible Sleeve 1 × £46.07
  - × HSDV 500 - Hood silencer - Helios 1 × £1,342.09
  - × STS 500 - Helios - Flanged Flexible Connector 1 × £136.02
  - × 154706 - AL 400 D4 F4 01 - Axial duct fan flue gas - Ruck 1 × £1,411.28
  - × WDS 500/560/630 - Helios - Soaker Sheet 1 × £1,673.95
  - × 15 Degree Bend - 400mm Diameter ( Segmented ) 1 × £21.36
  - × KSE-45 - AV Mounts (Set Of 4) - Soler & Palau 1 × £60.90
  - × REV 3N - Transformer Speed Controller - Soler & Palau 1 × £448.35
  - × 154707 - AL 400 D2 F4 01 - Axial duct fan flue gas - Ruck 1 × £1,776.32
  - × 154093 - AL 400 EC 01 - Axial 400mm duct fan energy efficient - Ruck 1 × £1,006.72
  - × End Cap - 400mm Diameter 1 × £11.15
  - × 60 Degree Bend - 400mm Diameter ( Segmented ) 1 × £26.37
  - × Male Connector - 400mm Diameter 1 × £4.90
  - × HQW 250/2 - Axial Plate Fan - Helios 1 × £323.61
  - × HQD 250/4 EX - Helios - Low Pressure Axial Plate Fan 1 × £586.87
  - × Reducer - 400mm Diameter 1 × £20.65
  - × HQD 250/2 EX - Helios - Low Pressure Axial Plate Fan 1 × £766.77
  - × HV-230 A - STYLVENT WALL & WINDOW FAN - SOLER & PALAU 1 × £288.75
  - × VARW 250/4 EX - Cased Mixed Flow Fan - Helios 1 × £1,250.52
  - × Flat Shoe - 400mm Diameter 1 × £38.99
  - × 45 Degree Bend - 400mm Diameter ( Segmented ) 1 × £19.99
  - × Roof Cowl - 400mm Diameter 1 × £47.00
  - × 90 Degree - Y Twin Bends - 400mm Diameter 1 × £126.99
  - × HRFW 250/4 EX - Cased Axial Fan - Helios 1 × £1,140.83
  - × HQW 250/6 - Axial Plate Fan - Helios 1 × £278.63
  - × 45 Degree - Y Twin Bends - 250mm Diameter 1 × £17.99
  - × IP-FBF 160 B - Facade panel for exhaust air (coated) - Helios 1 × £128.75
  - × IP-FDP 160/180 - Weather plate - Helios 1 × £133.90
  - × HQW 250/2 Ex - Axial Plate Fan - Helios 1 × £855.62
  Subtotal: £36,475.94
  
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Basket
- × HQD 500/4/4 - Helios - Low Pressure Axial Plate Fan 1 × £969.70
- × ASD-SGD 225 - Helios - Bell Mouth And Guard 1 × £107.50
- × SDT-140 - StrutFast Trunking - 140x90 2M White - StrutFoot 1 × £59.00
- × Multiflow SEL315/2A-1AC - Elta - Mixed Flow Fan 1 × £474.00
- × VFD-T 9A IP54 (3-PH) - Variable Frequency Inverter - Soler & Palau 1 × £783.88
- × Insulated Flexible Duct - 225mm Diameter 1 × £49.00
- × RVS 500 - Helios - Back Draught Shutter 1 × £199.64
- × RVM 500 - Helios - Back Draught Shutter 1 × £640.62
- × 162562 - AL 800 D4 F4 02 - Axial duct fan flue gas - Ruck 1 × £4,218.24
- × GBD 560/4/4 - 3PH GigaBox Centrifugal Fan - Helios 1 × £1,266.90
- × PA 24 - Speed potentiometer - Helios 1 × £64.89
- × 018-315-CLAMP - 315mm - Fast Clamps - Elta 1 × £43.75
- × 63JM MaxFan (EQ641406) - High Pressure Long Case Axial Fan - Flakt Woods 1 × £2,735.70
- × 060B-0630 - 630mm - Mounting Feet - Elta 1 × £72.00
- × SSD 500 - Helios - Base Attenuator 1 × £1,575.22
- × PIE-630 - Mounting Feet - Soler & Palau 1 × £59.85
- × FR 500 - Helios - Flange 1 × £59.24
- × VENT-125-ECOWATT - Soler And Palau - VENT ECOWATT In-line Centrifugal Fan 1 × £277.20
- × 137670 - EM 125L E2 01 - 125mm Inline Tube Fan - Ruck 1 × £72.68
- × SCD350/4-1AC - Case Mounted Axial Flow Fan - 1 ph - Elta 1 × £382.00
- × HQW EC 500 A - Helios - EC Axial Plate Fan 1 × £1,793.52
- × EBB-100 N HT - Bathroom, Utility Room & Kitchen Centrifugal Extract Fan - Soler & Palau 1 × £253.05
- × HQW EC 355 A - Helios - EC Axial Plate Fan 1 × £818.32
- × DLV 125 - Helios - Design Ventilation Valve 1 × £49.37
- × GB-WSG 710/EC630 - Giga box rain repellent grille - Helios 1 × £436.72
- × Combi Flexible Ducting - 225mm Diameter 1 × £26.99
- × Quietflow Twin SQT200-1ECL - Elta - Centrifugal Twin Box Fan 1 × £1,598.56
- × Raptor SPA630/4-3EC - Elta - EC-Plate Mounted Axial Flow Fan 1 × £1,740.00
- × KABT/4 9000/500 (1.5KW 230/400V) - Soler And Palau - Three Phase 4 Pole - Acoustic Centrifugal Kitchen Extract Fan 1 × £1,657.06
- × FM 400 - Helios - Flexible Sleeve 1 × £46.07
- × HSDV 500 - Hood silencer - Helios 1 × £1,342.09
- × STS 500 - Helios - Flanged Flexible Connector 1 × £136.02
- × 154706 - AL 400 D4 F4 01 - Axial duct fan flue gas - Ruck 1 × £1,411.28
- × WDS 500/560/630 - Helios - Soaker Sheet 1 × £1,673.95
- × 15 Degree Bend - 400mm Diameter ( Segmented ) 1 × £21.36
- × KSE-45 - AV Mounts (Set Of 4) - Soler & Palau 1 × £60.90
- × REV 3N - Transformer Speed Controller - Soler & Palau 1 × £448.35
- × 154707 - AL 400 D2 F4 01 - Axial duct fan flue gas - Ruck 1 × £1,776.32
- × 154093 - AL 400 EC 01 - Axial 400mm duct fan energy efficient - Ruck 1 × £1,006.72
- × End Cap - 400mm Diameter 1 × £11.15
- × 60 Degree Bend - 400mm Diameter ( Segmented ) 1 × £26.37
- × Male Connector - 400mm Diameter 1 × £4.90
- × HQW 250/2 - Axial Plate Fan - Helios 1 × £323.61
- × HQD 250/4 EX - Helios - Low Pressure Axial Plate Fan 1 × £586.87
- × Reducer - 400mm Diameter 1 × £20.65
- × HQD 250/2 EX - Helios - Low Pressure Axial Plate Fan 1 × £766.77
- × HV-230 A - STYLVENT WALL & WINDOW FAN - SOLER & PALAU 1 × £288.75
- × VARW 250/4 EX - Cased Mixed Flow Fan - Helios 1 × £1,250.52
- × Flat Shoe - 400mm Diameter 1 × £38.99
- × 45 Degree Bend - 400mm Diameter ( Segmented ) 1 × £19.99
- × Roof Cowl - 400mm Diameter 1 × £47.00
- × 90 Degree - Y Twin Bends - 400mm Diameter 1 × £126.99
- × HRFW 250/4 EX - Cased Axial Fan - Helios 1 × £1,140.83
- × HQW 250/6 - Axial Plate Fan - Helios 1 × £278.63
- × 45 Degree - Y Twin Bends - 250mm Diameter 1 × £17.99
- × IP-FBF 160 B - Facade panel for exhaust air (coated) - Helios 1 × £128.75
- × IP-FDP 160/180 - Weather plate - Helios 1 × £133.90
- × HQW 250/2 Ex - Axial Plate Fan - Helios 1 × £855.62
Subtotal: £36,475.94

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Home / Roof Support Systems

Reducer – 400mm Diameter

£20.65 ex. VAT

Reducer - 400mm Diameter quantity

SKU: af12a011a68e Category: Roof Support Systems Tag: 400mm

Description

Reducer – 400mm Diameter

This reducers largest size is 400mm.

Please select the smaller size.

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© Ventilation Experts 2025. Ventilation Experts 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

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