Zinc-plated mild steel reducers to fit spiral ducting tube. Typically pressed construction up to 250mm dia; fabricated over. Standard sizes are listed; if you cannot see the reducer size you are looking for please see our custom made duct reducers.
Ducting reducers, as with all fittings, are male and slip inside spiral tube.
Click on a size from the drop down menu below that represents the size you want to reduce from:
Please allow 1-3 days