Concentric Ducting Reducer/Enlarger Rigid Ducting Part
  • 85082 concentric reducer 10inch   6inch
  • 85112 85112 concentric reducer 5inch   4inch
  • 85122 concentric reducer 6inch   4inch
  • 85132 concentric reducer 6inch   5inch
  • 85152 concentric reducer 8inch   5inch
  • 85162 concentric reducer 8inch   6inch
  • 85082 concentric reducer 10inch   6inch
  • 85092 concentric reducer 10inch   8inch
  • 85103   vent 315mm   200mm metal reducer
  • 85102 concentric reducer 12inch   10inch
  • 85104   vent   metal concentric duct reducer   355mm   315mm %2814inch   12inch%29

Concentric Ducting Reducer/Enlarger Rigid Ducting Part

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Choose your size:

5" to 4" (125mm to 100mm)

£7.95 £7.95
Concentric Ducting Reducer/Enlarger Rigid Ducting Part
  • 85082 concentric reducer 10inch   6inch
  • 85112 85112 concentric reducer 5inch   4inch
  • 85122 concentric reducer 6inch   4inch
  • 85132 concentric reducer 6inch   5inch
  • 85152 concentric reducer 8inch   5inch
  • 85162 concentric reducer 8inch   6inch
  • 85082 concentric reducer 10inch   6inch
  • 85092 concentric reducer 10inch   8inch
  • 85103   vent 315mm   200mm metal reducer
  • 85102 concentric reducer 12inch   10inch
  • 85104   vent   metal concentric duct reducer   355mm   315mm %2814inch   12inch%29

Concentric Ducting Reducer / Enlarger

Sometimes it may be necessary or useful to have the ability to connect equipment or ducting of different sizes in a given extraction system. The concentric ducting reducer enables you to do this quickly and effectively. The concentric reducer can be used to both decrease and increase the diameters of ducting, depending on the direction in which it is positioned.

  • Provides extra options when creating extraction systems
  • Engineered from lightweight pressed steel
  • Incredibly tough and hardwearing
  • Can be reused again and again
  • Easy to fit, using separately available coupling

Contains:

1 x Concentric Ducting Reducer in the size of your choice

How a Concentric Ducting Reducer / Enlarger Works

The Concentric Ducting Reducer is a simple piece of metalwork that facilitates the easy connection of equipment and ducting with different diameters. For example, 5" ducting can be conveniently connected to a smaller sized 4" outlet point using this product.

How to use a Concentric Ducting Reducer / Enlarger

When a reducer is fitted after a duct fan, the negative change in diameter can have an impact on airflow as the air is forced to move through a smaller area. This can lead to increases in unwanted noise levels and a reduction in the overall efficiency of your extraction system. Only use a reducer in these circumstances when it is absolutely essential. Conversely, reducers can also be used to increase the size of ducting, creating the opposite effect, reducing noise by creating less resistance for air as it leaves the grow area.

The reducer can be connected to flexi ducting using duct tape or, ideally, with duct clips. A female to female coupling is required to join the reducer to other connectors or to rigid ducting. The female to female coupling has a slightly larger diameter than that of standard ducting sizes, enabling it to be fitted around the circumference of the concentric reducer. The opposite side of the coupling can then be used as the point to insert the ducting or equipment that you wish to connect to.

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