Please note we are currently unable to dispatch to Northern Ireland.

Custom Reducers

Ventilation Ducting  | Fabricated Round Fittings |  Custom Reducers



Please use this product page for any reducers you require that are not standard sizes. We can fabricate to any size you require, although please note we are unable to manufacture anything below 100mm diameter due to the limitations of our machinery.

Manufactured to order from 0.7mm galvanised mild steel.
Custom reducer info

Please use the drop-down menu below to select the size nearest to the larger end of the reducer you require. You will have the opportunity fine tune this size on the following pages. For example, if you require a reducer with a 335mm large end, you should select 350mm from the list below.


Larger end approx. size


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