core drill hole too small

[blainey]

Hi there
Not sure if I have got this under the most appropriate subject heading. I've had a hole drilled for a standard sized ducting hose but it is too small for the ducting kit for my cooker hood. I would prefer not to have to get it redrilled. Is there any way I can use the ducting kit I have (6") with the drill hole I have (5") ?
Thanks
Alison

 

[salem2000]

You should be able to get a Ducting Reducer kit from your supplier &/or DIY Shop.

Salem.

 

[bathjobby]

But it will obviously also reduce the air flow and may well increase the noise......