Cooker hood

[Alwayslearning22]

Hi folks, 

 

my new home has a 120mm flexi duct connected to cooker hood that needs connected to a 100mm rigid pipe coming out of the ceiling. 
it was taped with airtight tape by kitchen fitters but it’s fallen off. 
 

what’s the correct way to fix this so it’s airtight? 
 

thanks 

[Nickfromwales]

https://www.screwfix.com/p/manrose-round-central-reducer-white-125-100mm/10684

 

You can buy duct tape, or get the large jubilee clips.

 

https://www.amazon.co.uk/Kair-Metal-Hose-Clip-125mm/dp/B07ZPGVH4L/ref=asc_df_B07ZPGVH4L?tag=bingshoppinga-21&linkCode=df0&hvadid=79989677905430&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=42064&hvtargid=pla-4583589145554366&msclkid=eb0a5ca7b18819f05a0835004d2084ce&th=1