Connecting extractor to vent



I have an extractor hood ready to connect to the vent pipe in the wall. The problem is the funnel unit i have with the extractor. Its base is 150mm in size and it has two outlets.

any idea how i go from 150mm to my soil pipe outlet in the wall. I cannot find any adapter for my unit.

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ok thanks all for replies. I should get it sorted now.

Do regs really say the vent must be 150mm in size ?

This is not a new build, i am adding this extraction to current kitchen you see.
150mm will give better flow, and more quietly, but I had to reduce mine to 100mm and it works fine.

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