From 224mm

These 224mm spiral duct reducers connect 224mm diameter spiral ducting to a smaller duct size, stepping down to 100mm, 125mm, 150mm, 160mm, 180mm and 200mm. Reducers are the standard way to drop duct diameter through a system as airflow splits off along the run, keeping air velocity where the design needs it. All 6 options on this page reduce from a 224mm end. Orders over £400 ex VAT qualify for free UK mainland delivery, and every size is made to order and despatched in 2-3 working days.

Need a different starting diameter? Browse the full range of spiral duct reducers.