Cooker Hood Ducting (Kitchen Extractor Fan)

[MortarThePoint]

Our kitchen design has two side by side cooker hoods. Is there such a thing as an Inline Rectangular to Round 90 degree bend to put in the left hand hood as in the first image below or do I have to have them both bend/tee onto a straight run as in the second image. The blue circle is a soil pipe I have to get round and the dark brown lines are the wall surfaces of the kitchen.

 

 

 

Edited February 2, 2023 by MortarThePoint

[Nickfromwales]

Any of this get you out of the 💩?

 

https://www.tlc-direct.co.uk/Main_Index/Ventilation_Index/Ducting_Flat_6/index.html

[MortarThePoint]

This Thread has been stopped and restarted in the Ventilation section: