Metal Ducting Reducer
Metal Ducting Reducer - 125mm - 100mm (5"-4") is backordered and will ship as soon as it is back in stock.
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Metal Ducting Reducers are made of galvanised steel and used to connect odd sized ducting and fans together.
For example you could connect a 315mm extractor fan to 250mm ducting using a reducer.
Tip: you may only want to make a small outlet hole in the wall for extraction - a reducer can be used to connect large fans to small openings.
