Rectangular ducting adaptor

[CHIPPYAL]

Fitting an extractor that comes with the standard 150mm width rectangular ducting kit, unfortunately the existing ducting is 110mm in width and I need to join, can you get an adaptor?

many thanks

Al

[Handyman in Sussex]

Short answer is yes, I'd start with asking the kitchen supplier, and then the extractor manufacturer, if no good try an electrical merchant. They do exist

[Handyman in Sussex]

Actually I think you may struggle to do it in one fitting, Try a 150mm rectangle to round adaptor first and then a 150mm to 110mm round reducer, most of the parts can be seen here: http://www.i-sells.co.uk/ducting-system-150

I'm not sure if it's a good idea to reduce the duct size though.... Ok to increase it but to reduce it.....?