S&P TD-4000/355 Inline Mixed Flow Duct Fan Single Phase - 355mm
S&P TD-4000/355 Inline Mixed Flow Duct Fan Single Phase - 355mm
£927.87
SKU: 5211015200

S&P TD-4000/355 Inline Mixed Flow Duct Fan Single Phase - 355mm

Up to 3750 m³/h
355mm 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 TD-4000/355
Type in-line mixed-flow duct fan (MIXVENT-TD)
Duct connection 355 mm
Airflow (max, free air) 3750 m³/h
Motor External-rotor AC (230 V, 1~/3~, 50/60 Hz); voltage or inverter speed-controllable
Power (max) 407 W
Sound pressure @ 3 m 41 dB(A)
Casing Epoxy-polyester steel; IP54; Class F
Max ambient -40/+40°C

Summary

The S&P TD-4000/355 is a low-profile in-line mixed-flow duct fan for 355 mm ducting, moving up to 3750 m³/h. Its mixed-flow design combines high airflow with good pressure in a compact body that fits neatly into false ceilings and tight spaces.

The epoxy-polyester steel casing houses a greased-for-life ball-bearing motor with thermal overload protection. The unique support bracket lets the motor and impeller assembly be fitted or removed without dismantling the adjacent ducting, and it can be mounted in any position.

See more specification See less specification

The S&P TD-4000/355 is a large in-line mixed-flow duct fan from the MIXVENT-TD range, moving up to 3750 m³/h through 355 mm duct. Available single- or three-phase, it can be mounted at any point along the duct.

  • Airflow up to 3750 m³/h (free air); 355 mm connection
  • External-rotor AC motor; single-phase (voltage) or three-phase (inverter) speed control
  • Epoxy-polyester steel; IP54; Class F
  • Sound pressure 41 dB(A) at 3 m; greased-for-life ball bearings; thermal overload protection
  • Motor and impeller assembly fits/removes without dismantling the adjacent ducting

Suitable for

  • High-volume commercial and industrial duct extract or supply
  • Larger-diameter circular duct systems

Installation

Fits at any point along the duct in any position; the unique support bracket allows the motor/impeller assembly to be fitted or removed without dismantling the ducting. Should be installed on a suitable circuit by a qualified electrician.

Specifications

Brand S&P
Model TD-4000/355
Type in-line mixed-flow duct fan (MIXVENT-TD)
Duct connection 355 mm
Airflow (max, free air) 3750 m³/h
Motor External-rotor AC (230 V, 1~/3~, 50/60 Hz); voltage or inverter speed-controllable
Power (max) 407 W
Sound pressure @ 3 m 41 dB(A)
Casing Epoxy-polyester steel; IP54; Class F
Max ambient -40/+40°C

Manuals & Guides
S&P TD-4000/355 Datasheet

Product Description

The S&P TD-4000/355 is a large in-line mixed-flow duct fan from the MIXVENT-TD range, moving up to 3750 m³/h through 355 mm duct. Available single- or three-phase, it can be mounted at any point along the duct.

  • Airflow up to 3750 m³/h (free air); 355 mm connection
  • External-rotor AC motor; single-phase (voltage) or three-phase (inverter) speed control
  • Epoxy-polyester steel; IP54; Class F
  • Sound pressure 41 dB(A) at 3 m; greased-for-life ball bearings; thermal overload protection
  • Motor and impeller assembly fits/removes without dismantling the adjacent ducting

Suitable for

  • High-volume commercial and industrial duct extract or supply
  • Larger-diameter circular duct systems

Installation

Fits at any point along the duct in any position; the unique support bracket allows the motor/impeller assembly to be fitted or removed without dismantling the ducting. Should be installed on a suitable circuit by a qualified electrician.

Specifications

Brand S&P
Model TD-4000/355
Type in-line mixed-flow duct fan (MIXVENT-TD)
Duct connection 355 mm
Airflow (max, free air) 3750 m³/h
Motor External-rotor AC (230 V, 1~/3~, 50/60 Hz); voltage or inverter speed-controllable
Power (max) 407 W
Sound pressure @ 3 m 41 dB(A)
Casing Epoxy-polyester steel; IP54; Class F
Max ambient -40/+40°C

Manuals & Guides
S&P TD-4000/355 Datasheet

Delivery & Returns

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What is the S&P TD-4000/355 for?

It's a large in-line mixed-flow duct fan for 355 mm ducting, for high-volume extract or supply in commercial and industrial ventilation.

How much air and what duct size?

Up to 3750 m³/h (free air) through 355 mm ducting.

Can it be speed controlled?

Yes, single-phase models by voltage; three-phase models by frequency inverter.

How quiet is it?

Around 41 dB(A) at 3 m at maximum airflow.

Is it robust?

Yes, an epoxy-polyester steel casing rated IP54, Class F, with greased-for-life ball bearings and thermal overload protection.

Who should install it?

The motor and impeller assembly fits/removes without dismantling the ducting; as a mains fan it should be installed by a qualified electrician.

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