Metal Ducting Reducers
All sizes available (please choose from the drop down menu above)

Small end connectors – Steel, plastic and flexible ducting will fit over the connectors of these reducers

If connecting to fan spigots or other duct fittings, a short length of duct will be needed.
These allow you to easily reduce (or increase) the size of the ducting you are using, whilst keeping the connection secure and air tight.