S&P VENT-125NK In-Line Centrifugal Duct Fan - 125mm/5"
S&P VENT-125NK In-Line Centrifugal Duct Fan - 125mm/5"
£128.04
SKU: 5145890000

S&P VENT-125NK In-Line Centrifugal Duct Fan - 125mm/5"

Up to 390 m³/h
125mm connection
AC motor
Estimated delivery
In stock
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Delivery and Warranty

Standard UK Mainland Delivery
If you are not in a rush, then we offer standard delivery and your order should be with you between 2-3 working days. 
£6.95  

Next Working Day Delivery 
Place your order before 12pm Monday to Thursday and receive your order the next working day. Orders placed on Friday before 11am will be processed and delivered on Monday. (Excludes Sunday’s and Public Holidays) 
£15.95 

Nominated Day Delivery
We know sometimes you will need an order on a particular date in the future. Simply select this option at checkout and add what date you would like to receive the order. We will then contact you to confirm the date. If you need to change this order date then please contact us ASAP.
£15.95

Northern Ireland Delivery
We offer a flat fee rate for Northern Ireland orders, and all are 5-7 working day lead times.
£29.95 

Scottish Highlands & Islands Delivery
We only offer a flat fee rate for Scottish Highland & Islands orders, and all are 5-7 working day lead times.
£45.95

Channel Islands Delivery
We only offer a flat fee rate for Channel Islands orders, and all are 5-7 working day lead times.
£45.95 

Product Details

Specifications

Product specifications
Brand S&P
Model VENT-125NK
Type In-line centrifugal duct fan
Duct connection 125 mm
Airflow (max) 390 m³/h
Motor External-rotor AC, speed-controllable (230 V, 1~, 50/60 Hz)
Power (max) 60 W
Casing Corrosion-resistant galvanised steel; IP44, Class B
Protection Ball bearings; thermal overload protection
Warranty 1 Year Manufacturer

Summary

The S&P VENT-125NK is an in-line centrifugal duct fan for 125 mm ducting, moving up to 390 m³/h. Its backward-curved, non-stalling impeller and external-rotor motor deliver strong, reliable airflow even on longer, higher-resistance duct runs.

Built from corrosion-resistant galvanised steel with an IP44 motor, ball bearings and thermal overload protection, it comes with a pre-wired junction box and mounting foot or brackets for quick installation, and it's speed-controllable for flexible commissioning.

See more specification See less specification

The S&P VENT-125NK is an in-line duct centrifugal fan manufactured from high-grade corrosion-resistant pressed galvanised steel, supplied as standard with a pre-wired junction box and a robust mounting foot or brackets. It uses an enclosed single-phase external-rotor motor with a factory-matched backward-curved, non-stalling impeller, moving up to 390 m³/h through 125 mm duct.

  • Airflow up to 390 m³/h; 125 mm connection
  • External-rotor AC motor; speed-controllable (230 V, 1~, 50/60 Hz)
  • Backward-curved, non-stalling centrifugal impeller for strong airflow under pressure
  • Corrosion-resistant galvanised-steel casing; IP44, Class B insulation
  • Ball bearings and thermal overload protection
  • Pre-wired junction box; mounting foot or brackets included

Suitable for

  • Residential, commercial and industrial duct extract or supply
  • Longer, higher-resistance circular duct runs

Installation

Mounts in any orientation using the included foot/brackets; speed-controllable via a compatible controller. Should be installed on a suitable circuit by a qualified electrician.

Specifications

Brand S&P
Model VENT-125NK
Type In-line centrifugal duct fan
Duct connection 125 mm
Airflow (max) 390 m³/h
Motor External-rotor AC, speed-controllable (230 V, 1~, 50/60 Hz)
Power (max) 60 W
Casing Corrosion-resistant galvanised steel; IP44, Class B
Protection Ball bearings; thermal overload protection
Warranty 1 Year Manufacturer

Manuals & Guides
S&P VENT-125NK Datasheet

Product Description

The S&P VENT-125NK is an in-line duct centrifugal fan manufactured from high-grade corrosion-resistant pressed galvanised steel, supplied as standard with a pre-wired junction box and a robust mounting foot or brackets. It uses an enclosed single-phase external-rotor motor with a factory-matched backward-curved, non-stalling impeller, moving up to 390 m³/h through 125 mm duct.

  • Airflow up to 390 m³/h; 125 mm connection
  • External-rotor AC motor; speed-controllable (230 V, 1~, 50/60 Hz)
  • Backward-curved, non-stalling centrifugal impeller for strong airflow under pressure
  • Corrosion-resistant galvanised-steel casing; IP44, Class B insulation
  • Ball bearings and thermal overload protection
  • Pre-wired junction box; mounting foot or brackets included

Suitable for

  • Residential, commercial and industrial duct extract or supply
  • Longer, higher-resistance circular duct runs

Installation

Mounts in any orientation using the included foot/brackets; speed-controllable via a compatible controller. Should be installed on a suitable circuit by a qualified electrician.

Specifications

Brand S&P
Model VENT-125NK
Type In-line centrifugal duct fan
Duct connection 125 mm
Airflow (max) 390 m³/h
Motor External-rotor AC, speed-controllable (230 V, 1~, 50/60 Hz)
Power (max) 60 W
Casing Corrosion-resistant galvanised steel; IP44, Class B
Protection Ball bearings; thermal overload protection
Warranty 1 Year Manufacturer

Manuals & Guides
S&P VENT-125NK Datasheet

Delivery & Returns

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What is the S&P VENT-125NK for?

It's an in-line centrifugal duct fan for 125 mm circular ducting, for extract or supply in residential, commercial and industrial systems.

How much air and what duct size?

Up to 390 m³/h through 125 mm ducting.

Can it be speed controlled?

Yes, it runs on 230 V single-phase and can be regulated with a compatible S&P speed controller.

Is it strong on longer duct runs?

Yes, the backward-curved, non-stalling centrifugal impeller holds pressure well, making it suitable for long or higher-resistance duct runs.

Is it robust and protected?

Yes, corrosion-resistant galvanised-steel casing, IP44 motor with ball bearings and thermal overload protection.

Who should install it?

As a mains fan it should be installed on a suitable circuit by a qualified electrician.

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