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Aluminium Flexible Uninsulated Ducting 100mm / 4 Inch Diameter 10m Length Tecflex 400

Model No. DUCT410M
Availability: Normally In Stock


List price £35.84
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This is the 10m long Tecflex 400 Uninsulated Flexible Ducting 100mm diameter. Tecflex 400 is ideal for use in high, medium and low pressure air conditioning systems where a quality un-insulated flexible ducting is required.

Tecflex 400 is manufactured from aluminium & polyester film in a multi-ply format to provide a tough yet highly flexible, puncture resistant, ducting. The fabric is supported by an encapsulated high tensile steel wire helix at 35mm pitch. This construction results in a free yet ultra flexible duct in which smooth bends of less than 1.2D radius can be produced. Encapsulation of the wire helix between the inner and outer duct wall provides an exceptionally smooth inner wall resulting in excellent friction loss characteristics and reduced levels of noise generation.

Un-insulated flexible ducting for joints or connections shall be TECFLEX 400. It shall be manufactured from aluminium & polyester film to form a puncture resistant multi-ply laminate supported by an encapsulated high tensile steel wire helix. The duct shall meet the requirements of BS476 parts 6, 7 and 20. In respect of part 20 the duct shall have a fire resistance of not less than 25 minutes. 

Each 10 metre length of duct is individually cartoned & labelled. This production and packing configuration ensures that wastage through scrap is kept to a minimum and dramatically reduces the chance of damage in transit or on site. Storage space required is also kept to a minimum with a 10 metre length being compressed to 500mm.

  • Diameter: 100mm
  • Temperature: from 30 deg to 120 deg C.
  • Air Velocity: 30 m/s maximum.
  • Working Pressure: Maximum 2000 Pa positive.
  • Finish: Metallic Silver.
  • Standard Length: 10 Metres.
  • Installation: Fully extend ducting, then cut to exact length required using a sharp knife and pliers/wire cutters. 

Note: picture is informative.

Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.

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Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.

If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.


We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.