Zinc-plated mild steel reducers with seals to fit spiral ducting tube. Sizes 100mm to 250mm, and 315mm are typically of a pressed construction; 300mm and 355mm and above are typically of a fabricated construction.
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